Vulnerability-Lookup

CVE-2026-23634 (GCVE-0-2026-23634)

Vulnerability from cvelistv5 – Published: 2026-01-16 19:14 – Updated: 2026-01-16 21:38

Title

Pepr Overly Permissive RBAC ClusterRole in Admin Mode

Summary

Pepr is a type safe K8s middleware. Prior to 1.0.5 , Pepr defaults to a cluster-admin RBAC configuration and does not explicitly force or enforce least-privilege guidance for module authors. The default behavior exists to make the “getting started” experience smooth: new users can experiment with Pepr and create resources dynamically without needing to pre-configure RBAC. This vulnerability is fixed in 1.0.5.

Severity

0 (None)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-01-16 21:38 UTC

CWE

CWE-272 - Least Privilege Violation

Assigner

GitHub_M mitre root Scorecard

References

2 references

URL	Tags
https://github.com/defenseunicorns/pepr/security/…	x_refsource_CONFIRM
https://github.com/defenseunicorns/pepr/releases/…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
defenseunicorns	pepr	Affected: < 1.0.5

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-23634",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-01-16T21:38:48.365212Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-01-16T21:38:59.905Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "pepr",
          "vendor": "defenseunicorns",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.0.5"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Pepr is a type safe K8s middleware. Prior to 1.0.5 , Pepr defaults to a cluster-admin RBAC configuration and does not explicitly force or enforce least-privilege guidance for module authors. The default behavior exists to make the \u201cgetting started\u201d experience smooth: new users can experiment with Pepr and create resources dynamically without needing to pre-configure RBAC. This vulnerability is fixed in 1.0.5."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 0,
            "baseSeverity": "NONE",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-272",
              "description": "CWE-272: Least Privilege Violation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-16T19:14:46.483Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/defenseunicorns/pepr/security/advisories/GHSA-w54x-r83c-x79q",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/defenseunicorns/pepr/security/advisories/GHSA-w54x-r83c-x79q"
        },
        {
          "name": "https://github.com/defenseunicorns/pepr/releases/tag/v1.0.5",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/defenseunicorns/pepr/releases/tag/v1.0.5"
        }
      ],
      "source": {
        "advisory": "GHSA-w54x-r83c-x79q",
        "discovery": "UNKNOWN"
      },
      "title": "Pepr Overly Permissive RBAC ClusterRole in Admin Mode"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-23634",
    "datePublished": "2026-01-16T19:14:46.483Z",
    "dateReserved": "2026-01-14T16:08:37.483Z",
    "dateUpdated": "2026-01-16T21:38:59.905Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-23634",
      "date": "2026-10-02",
      "epss": "0.0025",
      "percentile": "0.14834"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "product": "pepr",
                "vendor": "defenseunicorns",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003c 1.0.5"
                  }
                ]
              }
            ],
            "source": "security-advisories@github.com"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:defenseunicorns:pepr:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "DC7900DF-C37E-4D04-9745-4A3E414A3806",
                    "versionEndExcluding": "1.0.5",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "Pepr is a type safe K8s middleware. Prior to 1.0.5 , Pepr defaults to a cluster-admin RBAC configuration and does not explicitly force or enforce least-privilege guidance for module authors. The default behavior exists to make the \u201cgetting started\u201d experience smooth: new users can experiment with Pepr and create resources dynamically without needing to pre-configure RBAC. This vulnerability is fixed in 1.0.5."
          },
          {
            "lang": "es",
            "value": "Pepr es un middleware de K8s con seguridad de tipos. Antes de la versi\u00f3n 1.0.5, Pepr se configura por defecto con una configuraci\u00f3n RBAC de cluster-admin y no fuerza ni impone expl\u00edcitamente directrices de m\u00ednimo privilegio para los autores de m\u00f3dulos. Este comportamiento predeterminado existe para que la experiencia de \u0027primeros pasos\u0027 sea fluida: los nuevos usuarios pueden experimentar con Pepr y crear recursos din\u00e1micamente sin necesidad de preconfigurar RBAC. Esta vulnerabilidad se corrige en la versi\u00f3n 1.0.5."
          }
        ],
        "id": "CVE-2026-23634",
        "lastModified": "2026-06-17T10:21:52.413",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 0.0,
                "baseSeverity": "NONE",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 0.0,
              "source": "security-advisories@github.com",
              "type": "Secondary"
            },
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 4.3,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "LOW",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 2.8,
              "impactScore": 1.4,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2026-23634",
                "options": [
                  {
                    "exploitation": "poc"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-01-16T21:38:48.365212Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2026-01-16T20:15:49.733",
        "references": [
          {
            "source": "security-advisories@github.com",
            "tags": [
              "Release Notes"
            ],
            "url": "https://github.com/defenseunicorns/pepr/releases/tag/v1.0.5"
          },
          {
            "source": "security-advisories@github.com",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "https://github.com/defenseunicorns/pepr/security/advisories/GHSA-w54x-r83c-x79q"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-272"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Secondary"
          }
        ]
      }
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-23634",
                    "options": [
                      {
                        "Exploitation": "poc"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-01-16T21:38:48.365212Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-01-16T21:38:55.935Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "product": "pepr",
              "vendor": "defenseunicorns",
              "versions": [
                {
                  "status": "affected",
                  "version": "\u003c 1.0.5"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "Pepr is a type safe K8s middleware. Prior to 1.0.5 , Pepr defaults to a cluster-admin RBAC configuration and does not explicitly force or enforce least-privilege guidance for module authors. The default behavior exists to make the \u201cgetting started\u201d experience smooth: new users can experiment with Pepr and create resources dynamically without needing to pre-configure RBAC. This vulnerability is fixed in 1.0.5."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 0,
                "baseSeverity": "NONE",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N",
                "version": "3.1"
              }
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-272",
                  "description": "CWE-272: Least Privilege Violation",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-01-16T19:14:46.483Z",
            "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
            "shortName": "GitHub_M"
          },
          "references": [
            {
              "name": "https://github.com/defenseunicorns/pepr/security/advisories/GHSA-w54x-r83c-x79q",
              "tags": [
                "x_refsource_CONFIRM"
              ],
              "url": "https://github.com/defenseunicorns/pepr/security/advisories/GHSA-w54x-r83c-x79q"
            },
            {
              "name": "https://github.com/defenseunicorns/pepr/releases/tag/v1.0.5",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/defenseunicorns/pepr/releases/tag/v1.0.5"
            }
          ],
          "source": {
            "advisory": "GHSA-w54x-r83c-x79q",
            "discovery": "UNKNOWN"
          },
          "title": "Pepr Overly Permissive RBAC ClusterRole in Admin Mode"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "assignerShortName": "GitHub_M",
        "cveId": "CVE-2026-23634",
        "datePublished": "2026-01-16T19:14:46.483Z",
        "dateReserved": "2026-01-14T16:08:37.483Z",
        "dateUpdated": "2026-01-16T21:38:59.905Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

EUVD-2026-265999

European Vulnerability Database identifier assigned by ENISA

Reserved

2026-10-02 07:02

Assigner

ENISA

Alias of

a CVE record, shown under related vulnerabilities. This identifier carries no description, severity or references of its own: they belong to that CVE.

JSON

To clipboard

{
  "assigner": "ENISA",
  "date_reserved": "2026-10-02T07:02:07.019264+00:00",
  "id": "EUVD-2026-265999"
}

FKIE_CVE-2026-23634

Vulnerability from fkie_nvd - Published: 2026-01-16 20:15 - Updated: 2026-06-17 10:21

Severity

0.0 (None) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N
4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/defenseunicorns/pepr/releases/tag/v1.0.5	Release Notes
	security-advisories@github.com	https://github.com/defenseunicorns/pepr/security/advisories/GHSA-w54x-r83c-x79q	Vendor Advisory

Impacted products

	Vendor	Product	Version
	defenseunicorns	pepr	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "pepr",
          "vendor": "defenseunicorns",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.0.5"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:defenseunicorns:pepr:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "DC7900DF-C37E-4D04-9745-4A3E414A3806",
              "versionEndExcluding": "1.0.5",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Pepr is a type safe K8s middleware. Prior to 1.0.5 , Pepr defaults to a cluster-admin RBAC configuration and does not explicitly force or enforce least-privilege guidance for module authors. The default behavior exists to make the \u201cgetting started\u201d experience smooth: new users can experiment with Pepr and create resources dynamically without needing to pre-configure RBAC. This vulnerability is fixed in 1.0.5."
    },
    {
      "lang": "es",
      "value": "Pepr es un middleware de K8s con seguridad de tipos. Antes de la versi\u00f3n 1.0.5, Pepr se configura por defecto con una configuraci\u00f3n RBAC de cluster-admin y no fuerza ni impone expl\u00edcitamente directrices de m\u00ednimo privilegio para los autores de m\u00f3dulos. Este comportamiento predeterminado existe para que la experiencia de \u0027primeros pasos\u0027 sea fluida: los nuevos usuarios pueden experimentar con Pepr y crear recursos din\u00e1micamente sin necesidad de preconfigurar RBAC. Esta vulnerabilidad se corrige en la versi\u00f3n 1.0.5."
    }
  ],
  "id": "CVE-2026-23634",
  "lastModified": "2026-06-17T10:21:52.413",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 0.0,
          "baseSeverity": "NONE",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 0.0,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 4.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 1.4,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-23634",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-01-16T21:38:48.365212Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-01-16T20:15:49.733",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Release Notes"
      ],
      "url": "https://github.com/defenseunicorns/pepr/releases/tag/v1.0.5"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://github.com/defenseunicorns/pepr/security/advisories/GHSA-w54x-r83c-x79q"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-272"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}

GHSA-W54X-R83C-X79Q

Vulnerability from github – Published: 2026-01-15 20:14 – Updated: 2026-01-16 21:56

Summary

Pepr Has Overly Permissive RBAC ClusterRole in Admin Mode

Details

Severity: LOW Target: /workspace/pepr/src/lib/assets/rbac.ts Endpoint: Kubernetes RBAC configuration Method: Deployment

Response / Rationale

Pepr defaults to rbacMode: "admin" because the initial experience is designed to be frictionless for new users. This mode ensures that users can deploy and run the default hello-pepr.ts module without needing to understand or pre-configure RBAC rules.

It’s important to note that hello-pepr.ts is intended strictly as a demo to showcase Pepr features and workflow. It is not intended for production use, and the documentation explicitly calls out that admin RBAC should not be used in production environments.

That said, if a user skips the documentation and does not review the npx pepr build options, they could deploy a module with broader privileges than necessary.

We consider this low severity because Pepr is a framework: the module author is ultimately responsible for selecting the appropriate RBAC scope for their module and environment as each module has different RBAC needs and requirements.

Our security focus is on ensuring the Pepr controller and runtime components operate securely within Kubernetes, while still allowing developers the flexibility to build modules with the access they require.

In order to fix this we will warn the user in logs that the default ClusterRole is cluster-admin and that it is not recommended for production.

How this can be exploited

This is not an inherently exploitable CVE in the traditional sense. It is being flagged because Pepr defaults to a cluster-admin RBAC configuration and does not explicitly force or enforce least-privilege guidance for module authors.

The default behavior exists to make the “getting started” experience smooth: new users can experiment with Pepr and create resources dynamically without needing to pre-configure RBAC.

Remediation: scope RBAC appropriately before deploying to production. Running:

npx pepr build --rbac-mode=scoped

generates the minimum RBAC required for the controller/informer to watch resources. Any additional permissions must be added based on the specific Kubernetes resources and CRUD operations performed by the module

Severity

0.0 (None)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N

1.7 (Low)


                  
                    CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "pepr"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.0.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-23634"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-272",
      "CWE-276"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-01-15T20:14:31Z",
    "nvd_published_at": "2026-01-16T20:15:49Z",
    "severity": "LOW"
  },
  "details": "Severity: LOW\nTarget: /workspace/pepr/src/lib/assets/rbac.ts\nEndpoint: Kubernetes RBAC configuration\nMethod: Deployment\n\n## Response / Rationale\nPepr defaults to `rbacMode: \"admin\"` because the initial experience is designed to be frictionless for new users. This mode ensures that users can deploy and run the default `hello-pepr.ts` module without needing to understand or pre-configure RBAC rules.\n\nIt\u2019s important to note that `hello-pepr.ts` is intended strictly as a demo to showcase Pepr features and workflow. It is not intended for production use, and the documentation explicitly calls out that admin RBAC should not be used in production environments.\n\nThat said, if a user skips the documentation and does not review the `npx pepr build` options, they could deploy a module with broader privileges than necessary.\n\nWe consider this low severity because Pepr is a framework: the module author is ultimately responsible for selecting the appropriate RBAC scope for their module and environment as each module has different RBAC needs and requirements. \n\nOur security focus is on ensuring the Pepr controller and runtime components operate securely within Kubernetes, while still allowing developers the flexibility to build modules with the access they require.\n\nIn order to fix this we will warn the user in logs that the default `ClusterRole` is `cluster-admin` and that it is not recommended for production.\n\n## How this can be exploited\n\nThis is not an inherently exploitable CVE in the traditional sense. It is being flagged because Pepr defaults to a cluster-admin RBAC configuration and does not explicitly force or enforce least-privilege guidance for module authors.\n\nThe default behavior exists to make the \u201cgetting started\u201d experience smooth: new users can experiment with Pepr and create resources dynamically without needing to pre-configure RBAC.\n\nRemediation: scope RBAC appropriately before deploying to production. Running:\n\n```bash\nnpx pepr build --rbac-mode=scoped\n```\n\ngenerates the minimum RBAC required for the controller/informer to watch resources. Any additional permissions must be added based on the specific Kubernetes resources and CRUD operations performed by the module",
  "id": "GHSA-w54x-r83c-x79q",
  "modified": "2026-01-16T21:56:18Z",
  "published": "2026-01-15T20:14:31Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/defenseunicorns/pepr/security/advisories/GHSA-w54x-r83c-x79q"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23634"
    },
    {
      "type": "WEB",
      "url": "https://github.com/defenseunicorns/pepr/pull/2883"
    },
    {
      "type": "WEB",
      "url": "https://github.com/defenseunicorns/pepr/commit/d4675a662b8602fcde7e4bf603432f2f133b1fd1"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/defenseunicorns/pepr"
    },
    {
      "type": "WEB",
      "url": "https://github.com/defenseunicorns/pepr/releases/tag/v1.0.5"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Pepr Has Overly Permissive RBAC ClusterRole in Admin Mode"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-23634 (GCVE-0-2026-23634)

EUVD-2026-265999

FKIE_CVE-2026-23634

GHSA-W54X-R83C-X79Q

Response / Rationale

How this can be exploited

Tags

Sightings

Nomenclature

Related by attack behaviour