matomo — security advisory

{
  "id": "09cbccce352c3421dbb74b243071658a0a3321e4e994efbc91893ad9106f37f4",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-78850",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2026-78850",
    "summary": "An issue in Matomo v.5.11.2 allows a remote attacker to obtain sensitive information via the SiteContentDetector / SitesManager component. NOTE: the Supplier disputes the relevance of this report because the site administrator is a trusted party, and would not plausibly set main_url to a URL that offers additional information to an adversary.",
    "evidence": "osv:DEBIAN-CVE-2026-78850",
    "products": [
      {
        "name": {
          "value": "matomo",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "5.3.1+dfsg-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "5.5.1+dfsg-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "5.5.1+dfsg-2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "5.5.1+dfsg-3",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "5.8.0-1",
            "evidence": "/affected/0/versions"
          }
        ]
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "DEBIAN-CVE-2026-78850",
      "aliases": [
        "DEBIAN-CVE-2026-78850"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "matomo",
            "purl": "pkg:deb/debian/matomo?arch=source&distro=trixie",
            "ecosystem": "Debian:13"
          },
          "versions": [
            "5.3.1+dfsg-1",
            "5.5.1+dfsg-1",
            "5.5.1+dfsg-2",
            "5.5.1+dfsg-3",
            "5.8.0-1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-78850.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-27T09:47:41.124237918Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-78850"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2026-78850"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-78850",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 461306,
  "published_at": "2026-10-15T17:17:28.513+00:00"
}