squid: Fix of 3 CVEs

{
  "id": "627f4bf6d2d99b2bfb27f5cc16cd855da1180434a40b96ed421856eee9af1965",
  "url": "https://osv.dev/vulnerability/CLSA-2026-1777384121",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "squid: Fix of 3 CVEs",
    "summary": "- CVE-2019-12521: fix ESI parser off-by-one heap overflow by enforcing a stack-depth limit and throwing on overflow - CVE-2019-12524 already addressed by the CVE-2019-12520 backport (same fix upstream; see Squid advisory SQUID-2019:4)",
    "evidence": "osv:CLSA-2026-1777384121",
    "products": [
      {
        "name": {
          "value": "squid",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "7:3.1.23-30.el6.tuxcare.els18",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CLSA-2026-1777384121",
      "aliases": [
        "CLSA-2026-1777384121"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "7:3.1.23-30.el6.tuxcare.els18"
                }
              ]
            }
          ],
          "package": {
            "name": "squid",
            "purl": "pkg:rpm/tuxcare/squid?distro=oraclelinux-6",
            "ecosystem": "TuxCare:OracleLinux:6"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/oraclelinux6els/CLSA-2026-1777384121.json"
          }
        }
      ],
      "modified": "2026-10-21T10:48:11.836264808Z",
      "provider": "osv",
      "upstream": [
        "CVE-2019-12520",
        "CVE-2019-12521",
        "CVE-2019-12524"
      ],
      "references": [
        "https://errata.tuxcare.com/els_os/oraclelinux6els/CLSA-2026-1777384121.html"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2019-12520",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2019-12521",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2019-12524",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 392865,
  "published_at": "2026-04-28T13:48:46+00:00"
}