CVE-2026-54681 (GCVE-0-2026-54681)

Vulnerability from cvelistv5 – Published: 2026-08-21 18:41 – Updated: 2026-08-21 19:04
VLAI
Title
DiscordChatExporter: HTML attribute injection via unescaped emoji name in HTML export
Summary
DiscordChatExporter saves Discord chat logs to a file. Prior to 2.47.2, the VisitEmojiAsync method in DiscordChatExporter.Core/Exporting/HtmlMarkdownVisitor.cs interpolates emoji.Name into the alt attribute and emoji.Code into the title attribute without HTML entity encoding. This affects HTML exports regardless of the markdown setting. Discord's current custom emoji name validation normally excludes attribute-breaking characters, but tampered offline input, a relaxed upstream validation rule, or another future metadata source can inject an HTML attribute and execute script when a user opens the export. This issue is fixed in version 2.47.2.
Severity
4.1 (Medium)
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 19:04 UTC
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
Impacted products
Vendor Product Version
Tyrrrz DiscordChatExporter Affected: < 2.47.2
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-54681",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-21T19:04:35.533953Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-21T19:04:42.235Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/Tyrrrz/DiscordChatExporter/security/advisories/GHSA-r7qm-wg9p-pjfc"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "DiscordChatExporter",
          "vendor": "Tyrrrz",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 2.47.2"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "DiscordChatExporter saves Discord chat logs to a file. Prior to 2.47.2, the VisitEmojiAsync method in DiscordChatExporter.Core/Exporting/HtmlMarkdownVisitor.cs interpolates emoji.Name into the alt attribute and emoji.Code into the title attribute without HTML entity encoding. This affects HTML exports regardless of the markdown setting. Discord\u0027s current custom emoji name validation normally excludes attribute-breaking characters, but tampered offline input, a relaxed upstream validation rule, or another future metadata source can inject an HTML attribute and execute script when a user opens the export. This issue is fixed in version 2.47.2."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 4.1,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-79",
              "description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-21T18:41:45.861Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/Tyrrrz/DiscordChatExporter/security/advisories/GHSA-r7qm-wg9p-pjfc",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/Tyrrrz/DiscordChatExporter/security/advisories/GHSA-r7qm-wg9p-pjfc"
        },
        {
          "name": "https://github.com/Tyrrrz/DiscordChatExporter/pull/1544",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/Tyrrrz/DiscordChatExporter/pull/1544"
        },
        {
          "name": "https://github.com/Tyrrrz/DiscordChatExporter/commit/f4d1e630f7f27120c3be4320d92cc8b932e78688",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/Tyrrrz/DiscordChatExporter/commit/f4d1e630f7f27120c3be4320d92cc8b932e78688"
        },
        {
          "name": "https://github.com/Tyrrrz/DiscordChatExporter/releases/tag/2.47.2",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/Tyrrrz/DiscordChatExporter/releases/tag/2.47.2"
        }
      ],
      "source": {
        "advisory": "GHSA-r7qm-wg9p-pjfc",
        "discovery": "UNKNOWN"
      },
      "title": "DiscordChatExporter: HTML attribute injection via unescaped emoji name in HTML export"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-54681",
    "datePublished": "2026-08-21T18:41:45.861Z",
    "dateReserved": "2026-06-15T22:53:58.561Z",
    "dateUpdated": "2026-08-21T19:04:42.235Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-54681",
      "date": "2026-10-19",
      "epss": "0.00164",
      "percentile": "0.05286"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "product": "DiscordChatExporter",
                "vendor": "Tyrrrz",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003c 2.47.2"
                  }
                ]
              }
            ],
            "source": "security-advisories@github.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "DiscordChatExporter saves Discord chat logs to a file. Prior to 2.47.2, the VisitEmojiAsync method in DiscordChatExporter.Core/Exporting/HtmlMarkdownVisitor.cs interpolates emoji.Name into the alt attribute and emoji.Code into the title attribute without HTML entity encoding. This affects HTML exports regardless of the markdown setting. Discord\u0027s current custom emoji name validation normally excludes attribute-breaking characters, but tampered offline input, a relaxed upstream validation rule, or another future metadata source can inject an HTML attribute and execute script when a user opens the export. This issue is fixed in version 2.47.2."
          },
          {
            "lang": "es",
            "value": "DiscordChatExporter guarda los registros de chat de Discord en un archivo. Antes de 2.47.2, el m\u00e9todo VisitEmojiAsync en DiscordChatExporter.Core/Exporting/HtmlMarkdownVisitor.cs interpola emoji.Name en el atributo alt y emoji.Code en el atributo title sin codificaci\u00f3n de entidades HTML. Esto afecta a las exportaciones HTML independientemente de la configuraci\u00f3n de markdown. La validaci\u00f3n actual de nombres de emojis personalizados de Discord normalmente excluye caracteres que rompen atributos, pero una entrada sin conexi\u00f3n manipulada, una regla de validaci\u00f3n ascendente relajada o cualquier otra fuente de metadatos futura puede inyectar un atributo HTML y ejecutar un script cuando un usuario abre la exportaci\u00f3n. Este problema est\u00e1 solucionado en la versi\u00f3n 2.47.2."
          }
        ],
        "id": "CVE-2026-54681",
        "lastModified": "2026-10-14T19:10:00.297",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "HIGH",
                "attackVector": "LOCAL",
                "availabilityImpact": "NONE",
                "baseScore": 4.1,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "LOW",
                "integrityImpact": "LOW",
                "privilegesRequired": "NONE",
                "scope": "CHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 1.0,
              "impactScore": 2.7,
              "source": "security-advisories@github.com",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2026-54681",
                "options": [
                  {
                    "exploitation": "poc"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-21T19:04:35.533953Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2026-08-21T19:17:03.457",
        "references": [
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/Tyrrrz/DiscordChatExporter/commit/f4d1e630f7f27120c3be4320d92cc8b932e78688"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/Tyrrrz/DiscordChatExporter/pull/1544"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/Tyrrrz/DiscordChatExporter/releases/tag/2.47.2"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/Tyrrrz/DiscordChatExporter/security/advisories/GHSA-r7qm-wg9p-pjfc"
          },
          {
            "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
            "url": "https://github.com/Tyrrrz/DiscordChatExporter/security/advisories/GHSA-r7qm-wg9p-pjfc"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Deferred",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-79"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Secondary"
          }
        ]
      }
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-54681",
                    "options": [
                      {
                        "Exploitation": "poc"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-08-21T19:04:35.533953Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-08-21T19:04:17.611Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "references": [
              {
                "tags": [
                  "exploit"
                ],
                "url": "https://github.com/Tyrrrz/DiscordChatExporter/security/advisories/GHSA-r7qm-wg9p-pjfc"
              }
            ],
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "product": "DiscordChatExporter",
              "vendor": "Tyrrrz",
              "versions": [
                {
                  "status": "affected",
                  "version": "\u003c 2.47.2"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "DiscordChatExporter saves Discord chat logs to a file. Prior to 2.47.2, the VisitEmojiAsync method in DiscordChatExporter.Core/Exporting/HtmlMarkdownVisitor.cs interpolates emoji.Name into the alt attribute and emoji.Code into the title attribute without HTML entity encoding. This affects HTML exports regardless of the markdown setting. Discord\u0027s current custom emoji name validation normally excludes attribute-breaking characters, but tampered offline input, a relaxed upstream validation rule, or another future metadata source can inject an HTML attribute and execute script when a user opens the export. This issue is fixed in version 2.47.2."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "attackComplexity": "HIGH",
                "attackVector": "LOCAL",
                "availabilityImpact": "NONE",
                "baseScore": 4.1,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "LOW",
                "integrityImpact": "LOW",
                "privilegesRequired": "NONE",
                "scope": "CHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N",
                "version": "3.1"
              }
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-79",
                  "description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-08-21T18:41:45.861Z",
            "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
            "shortName": "GitHub_M"
          },
          "references": [
            {
              "name": "https://github.com/Tyrrrz/DiscordChatExporter/security/advisories/GHSA-r7qm-wg9p-pjfc",
              "tags": [
                "x_refsource_CONFIRM"
              ],
              "url": "https://github.com/Tyrrrz/DiscordChatExporter/security/advisories/GHSA-r7qm-wg9p-pjfc"
            },
            {
              "name": "https://github.com/Tyrrrz/DiscordChatExporter/pull/1544",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/Tyrrrz/DiscordChatExporter/pull/1544"
            },
            {
              "name": "https://github.com/Tyrrrz/DiscordChatExporter/commit/f4d1e630f7f27120c3be4320d92cc8b932e78688",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/Tyrrrz/DiscordChatExporter/commit/f4d1e630f7f27120c3be4320d92cc8b932e78688"
            },
            {
              "name": "https://github.com/Tyrrrz/DiscordChatExporter/releases/tag/2.47.2",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/Tyrrrz/DiscordChatExporter/releases/tag/2.47.2"
            }
          ],
          "source": {
            "advisory": "GHSA-r7qm-wg9p-pjfc",
            "discovery": "UNKNOWN"
          },
          "title": "DiscordChatExporter: HTML attribute injection via unescaped emoji name in HTML export"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "assignerShortName": "GitHub_M",
        "cveId": "CVE-2026-54681",
        "datePublished": "2026-08-21T18:41:45.861Z",
        "dateReserved": "2026-06-15T22:53:58.561Z",
        "dateUpdated": "2026-08-21T19:04:42.235Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.



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.