github - ghsa-j5vq-62gr-8v3r

GHSA-J5VQ-62GR-8V3R

Vulnerability from github – Published: 2025-12-17 21:30 – Updated: 2025-12-20 17:13

Summary

Mattermost fails to check Websocket request for proper UTF-8 format potentially crashing Calls plug-in

Details

Mattermost versions 11.0.x <= 11.0.4, 10.12.x <= 10.12.2, 10.11.x <= 10.11.6 fail to check WebSocket request field for proper UTF-8 format, which allows attacker to crash Calls plug-in via sending malformed request.

Severity ?

6.5 (Medium)


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

Show details on source website

JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/mattermost/mattermost-plugin-calls"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.11.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-12689"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1287"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-12-20T17:13:53Z",
    "nvd_published_at": "2025-12-17T19:16:00Z",
    "severity": "MODERATE"
  },
  "details": "Mattermost versions 11.0.x \u003c= 11.0.4, 10.12.x \u003c= 10.12.2, 10.11.x \u003c= 10.11.6 fail to check WebSocket request field for proper UTF-8 format, which allows attacker to crash Calls plug-in via sending malformed request.",
  "id": "GHSA-j5vq-62gr-8v3r",
  "modified": "2025-12-20T17:13:53Z",
  "published": "2025-12-17T21:30:48Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-12689"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mattermost/mattermost-plugin-calls/commit/f68b41980e1274e05cf91c687e2af1a73c5e36ca"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/mattermost/mattermost"
    },
    {
      "type": "WEB",
      "url": "https://mattermost.com/security-updates"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Mattermost fails to check Websocket request for proper UTF-8 format potentially crashing Calls plug-in"
}

CVE-2025-12689 (GCVE-0-2025-12689)

Vulnerability from cvelistv5 – Published: 2025-12-17 18:14 – Updated: 2025-12-17 19:29

Title

DoS in Calls plugin via malformed UTF-8 in WebSocket request

Summary

Severity ?

6.5 (Medium)


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

CWE

CWE-1287 - Improper Validation of Specified Type of Input

Assigner

Mattermost

References

URL

Tags

https://mattermost.com/security-updates

Impacted products

	Vendor	Product	Version
	Mattermost	Mattermost	Affected: 11.0.0 , ≤ 11.0.4 (semver) Affected: 10.12.0 , ≤ 10.12.2 (semver) Affected: 10.11.0 , ≤ 10.11.6 (semver) Unaffected: 11.1.0 Unaffected: 11.0.5 Unaffected: 10.12.3 Unaffected: 10.11.7

Credits

National Security Agency

Show details on NVD website

JSON

To clipboard

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                "id": "CVE-2025-12689",
                "options": [
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                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-12-17T18:52:40.079447Z",
                "version": "2.0.3"
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Sightings

Author	Source	Type	Date

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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-J5VQ-62GR-8V3R

CVE-2025-12689 (GCVE-0-2025-12689)

Tags

Sightings

Nomenclature