mattermost-12.0 — security advisory

{
  "id": "a3871fcddb2eb6bdf83ae65634510c31209bddaba14ba6e41cd9c4b543e3fe1f",
  "url": "https://osv.dev/vulnerability/CGA-mwx8-xf86-j64h",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CGA-mwx8-xf86-j64h",
    "summary": "CGA-mwx8-xf86-j64h",
    "evidence": "osv:CGA-mwx8-xf86-j64h",
    "products": [
      {
        "name": {
          "value": "mattermost-12.0",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "0",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "CGA-mwx8-xf86-j64h",
      "aliases": [
        "CGA-mwx8-xf86-j64h"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "mattermost-12.0",
            "purl": "pkg:apk/chainguard/mattermost-12.0?arch=aarch64",
            "ecosystem": "Chainguard"
          },
          "database_specific": {
            "source": "https://advisories.cgr.dev/chainguard/v3/osv/CGA-mwx8-xf86-j64h.json"
          },
          "ecosystem_specific": {
            "components": [
              {
                "component_name": "mattermost-12.0",
                "component_purl": "pkg:apk/mattermost-12.0@12.0.0-r0",
                "component_type": "apk",
                "component_version": "12.0.0-r0",
                "component_location": "/.PKGINFO",
                "latest_event_status": "false_positive_determination",
                "latest_event_timestamp": "2026-10-16T14:06:21Z"
              }
            ]
          }
        }
      ],
      "modified": "2026-10-16T16:18:02.409111257Z",
      "provider": "osv",
      "upstream": [
        "CVE-2022-4019",
        "GHSA-hqqj-g6mv-rw46"
      ],
      "references": [
        "https://hackerone.com/reports/1685979",
        "https://mattermost.com/security-updates/"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2022-4019",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 342379,
  "published_at": "2026-10-14T16:41:08+00:00"
}