trafficserver — security advisory

{
  "id": "2ef3a973fef6e8fa3c5bc6b603a6bc5652949c367a066105577f1fe246c964b3",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-111811",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2026-111811",
    "summary": "Apache Traffic Server's experimental tsmemcache plugin allows unauthenticated network read, write, and deletion of the shared proxy cache. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.15, from 10.0.0 through 10.1.4, 10.2.0. Users are recommended to upgrade to version 9.2.16, 10.1.5, or 10.2.1, which fix the issue.",
    "evidence": "osv:DEBIAN-CVE-2026-111811",
    "products": [
      {
        "name": {
          "value": "trafficserver",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "9.2.0+ds-2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "9.2.0+ds-2+deb12u1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "9.2.1+ds-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "9.2.2+ds-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "9.2.3+ds-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "9.2.3+ds-1+deb12u1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "9.2.4+ds-0+deb12u1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "9.2.4+ds-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "9.2.4+ds-2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "9.2.5+ds-0+deb12u1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "9.2.5+ds-0+deb12u2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "9.2.5+ds-0+deb12u3",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "9.2.5+ds-0+deb12u4",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "9.2.5+ds-1",
            "evidence": "/affected/0/versions"
          }
        ]
      }
    ],
    "severity": "critical",
    "structured": {
      "id": "DEBIAN-CVE-2026-111811",
      "aliases": [
        "DEBIAN-CVE-2026-111811"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:H/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"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "trafficserver",
            "purl": "pkg:deb/debian/trafficserver?arch=source&distro=bookworm",
            "ecosystem": "Debian:12"
          },
          "versions": [
            "9.2.0+ds-2",
            "9.2.0+ds-2+deb12u1",
            "9.2.1+ds-1",
            "9.2.2+ds-1",
            "9.2.3+ds-1",
            "9.2.3+ds-1+deb12u1",
            "9.2.4+ds-0+deb12u1",
            "9.2.4+ds-1",
            "9.2.4+ds-2",
            "9.2.5+ds-0+deb12u1",
            "9.2.5+ds-0+deb12u2",
            "9.2.5+ds-0+deb12u3",
            "9.2.5+ds-0+deb12u4",
            "9.2.5+ds-1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-111811.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-27T09:47:36.891767013Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-111811"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2026-111811"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-111811",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 461300,
  "published_at": "2026-10-21T20:17:22.92+00:00"
}