Vulnerability-Lookup

CVE-2026-35636 (GCVE-0-2026-35636)

Vulnerability from cvelistv5 – Published: 2026-04-09 21:27 – Updated: 2026-06-23 16:15 X_Open Source

Title

OpenClaw 2026.3.11 < 2026.3.25 - Session Isolation Bypass via sessionId Resolution

Summary

OpenClaw versions 2026.3.11 through 2026.3.24 contain a session isolation bypass vulnerability where session_status resolves sessionId to canonical session keys before enforcing visibility checks. Sandboxed child sessions can exploit this to access parent or sibling sessions that should be blocked by explicit sessionKey restrictions.

Severity

7.1 (High)


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

6.5 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-04-10 20:16 UTC

CWE

CWE-696 - Incorrect Behavior Order

Assigner

VulnCheck mitre root Scorecard

References

3 references

URL	Tags
https://github.com/openclaw/openclaw/security/adv…	vendor-advisory
https://github.com/openclaw/openclaw/commit/d9810…	patch
https://www.vulncheck.com/advisories/openclaw-ses…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
OpenClaw	OpenClaw	Affected: 2026.3.11 , < 2026.3.25 (semver) Unaffected: 2026.3.25 (semver) cpe:2.3:a:openclaw:openclaw::::::node.js::*

Date Public

2026-03-26 00:00

Credits

Nathan (@nexrin) KeenSecurityLab

Show details on NVD website

JSON

To clipboard

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BREW-OPENCLAW-CLI-CVE-20… (GHSA-Q2QC-744P-66R2)

Vulnerability from osv_homebrew – Published: 2026-08-13 17:21 – Updated: 2026-09-25 08:57 – Source website

Summary

OpenClaw: `session_status` sessionId resolution bypasses sandboxed session-tree visibility

Details

Summary

session_status sessionId resolution bypasses sandboxed session-tree visibility

Affected Packages / Versions

Package: openclaw
Affected versions: >= 2026.3.11, <= 2026.3.24
First patched version: 2026.3.25
Latest published npm version at verification time: 2026.3.24

Details

session_status previously resolved a sessionId to a canonical session key after early visibility checks, letting sandboxed children reach parent or sibling sessions that were blocked by explicit sessionKey. Commit d9810811b6c3c9266d7580f00574e5e02f7663de enforces visibility after sessionId resolution so sandboxed callers cannot escape their session tree.

Verified vulnerable on tag v2026.3.24 and fixed on main by commit d9810811b6c3c9266d7580f00574e5e02f7663de.

Fix Commit(s)

d9810811b6c3c9266d7580f00574e5e02f7663de

References

URL

Type

	https://github.com/openclaw/openclaw/security/adv…	WEB
	https://github.com/openclaw/openclaw/commit/d9810…	WEB
	https://github.com/openclaw/openclaw	PACKAGE

JSON

To clipboard

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      "ecosystem_specific": {
        "fix": "bump",
        "range_state": "fixed",
        "upstream_fixed_in": "2026.3.28"
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          "type": "ECOSYSTEM"
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      {
        "ecosystem": "npm",
        "key": "pkg:npm/openclaw@2026.9.6",
        "name": "openclaw",
        "strategy": "registry",
        "subject_version": "2026.9.6"
      }
    ]
  },
  "details": "## Summary\n\n`session_status` sessionId resolution bypasses sandboxed session-tree visibility\n\n## Affected Packages / Versions\n\n- Package: `openclaw`\n- Affected versions: `\u003e= 2026.3.11, \u003c= 2026.3.24`\n- First patched version: `2026.3.25`\n- Latest published npm version at verification time: `2026.3.24`\n\n## Details\n\n`session_status` previously resolved a `sessionId` to a canonical session key after early visibility checks, letting sandboxed children reach parent or sibling sessions that were blocked by explicit `sessionKey`. Commit `d9810811b6c3c9266d7580f00574e5e02f7663de` enforces visibility after `sessionId` resolution so sandboxed callers cannot escape their session tree.\n\nVerified vulnerable on tag `v2026.3.24` and fixed on `main` by commit `d9810811b6c3c9266d7580f00574e5e02f7663de`.\n\n## Fix Commit(s)\n\n- `d9810811b6c3c9266d7580f00574e5e02f7663de`",
  "id": "BREW-openclaw-cli-CVE-2026-35636",
  "modified": "2026-09-25T08:57:16Z",
  "published": "2026-08-13T17:21:32Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-q2qc-744p-66r2"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openclaw/openclaw/commit/d9810811b6c3c9266d7580f00574e5e02f7663de"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/openclaw/openclaw"
    }
  ],
  "schema_version": "1.7.3",
  "summary": "OpenClaw: `session_status` sessionId resolution bypasses sandboxed session-tree visibility",
  "upstream": [
    "GHSA-q2qc-744p-66r2",
    "CVE-2026-35636"
  ]
}

EUVD-2026-329513

European Vulnerability Database identifier assigned by ENISA

Reserved

2026-10-02 07:48

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": "2026-10-02T07:48:40.898572+00:00",
  "id": "EUVD-2026-329513"
}

FKIE_CVE-2026-35636

Vulnerability from fkie_nvd - Published: 2026-04-09 22:16 - Updated: 2026-06-17 10:40

Severity

6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Summary

References

URL	Tags
disclosure@vulncheck.com	https://github.com/openclaw/openclaw/commit/d9810811b6c3c9266d7580f00574e5e02f7663de	Patch
disclosure@vulncheck.com	https://github.com/openclaw/openclaw/security/advisories/GHSA-q2qc-744p-66r2	Vendor Advisory
disclosure@vulncheck.com	https://www.vulncheck.com/advisories/openclaw-session-isolation-bypass-via-sessionid-resolution	Third Party Advisory

Impacted products

	Vendor	Product	Version
	openclaw	openclaw	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "packageURL": "pkg:npm/openclaw",
          "product": "OpenClaw",
          "vendor": "OpenClaw",
          "versions": [
            {
              "lessThan": "2026.3.25",
              "status": "affected",
              "version": "2026.3.11",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "2026.3.25",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "disclosure@vulncheck.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*",
              "matchCriteriaId": "7734D87C-5FD8-433A-98A4-6A174F7A3A96",
              "versionEndExcluding": "2026.3.25",
              "versionStartIncluding": "2026.3.11",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "OpenClaw versions 2026.3.11 through 2026.3.24 contain a session isolation bypass vulnerability where session_status resolves sessionId to canonical session keys before enforcing visibility checks. Sandboxed child sessions can exploit this to access parent or sibling sessions that should be blocked by explicit sessionKey restrictions."
    }
  ],
  "id": "CVE-2026-35636",
  "lastModified": "2026-06-17T10:40:56.010",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6,
        "source": "disclosure@vulncheck.com",
        "type": "Secondary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 7.1,
          "baseSeverity": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "LOW",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "disclosure@vulncheck.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-35636",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-04-10T20:16:28.123645Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-04-09T22:16:32.750",
  "references": [
    {
      "source": "disclosure@vulncheck.com",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/openclaw/openclaw/commit/d9810811b6c3c9266d7580f00574e5e02f7663de"
    },
    {
      "source": "disclosure@vulncheck.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-q2qc-744p-66r2"
    },
    {
      "source": "disclosure@vulncheck.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.vulncheck.com/advisories/openclaw-session-isolation-bypass-via-sessionid-resolution"
    }
  ],
  "sourceIdentifier": "disclosure@vulncheck.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-696"
        }
      ],
      "source": "disclosure@vulncheck.com",
      "type": "Secondary"
    }
  ]
}

GHSA-55RV-68Q5-WXMQ

Vulnerability from github – Published: 2026-04-10 00:30 – Updated: 2026-04-10 00:30

Details

Severity

6.5 (Medium)


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

7.1 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-35636"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-696"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-09T22:16:32Z",
    "severity": "HIGH"
  },
  "details": "OpenClaw versions 2026.3.11 through 2026.3.24 contain a session isolation bypass vulnerability where session_status resolves sessionId to canonical session keys before enforcing visibility checks. Sandboxed child sessions can exploit this to access parent or sibling sessions that should be blocked by explicit sessionKey restrictions.",
  "id": "GHSA-55rv-68q5-wxmq",
  "modified": "2026-04-10T00:30:30Z",
  "published": "2026-04-10T00:30:30Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-q2qc-744p-66r2"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-35636"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openclaw/openclaw/commit/d9810811b6c3c9266d7580f00574e5e02f7663de"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/openclaw-session-isolation-bypass-via-sessionid-resolution"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

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-2026-35636 (GCVE-0-2026-35636)

BREW-OPENCLAW-CLI-CVE-20… (GHSA-Q2QC-744P-66R2)

Summary

Affected Packages / Versions

Details

Fix Commit(s)

EUVD-2026-329513

FKIE_CVE-2026-35636

GHSA-55RV-68Q5-WXMQ

Tags

Sightings

Nomenclature

Related by attack behaviour