Fix CVE(s): CVE-2024-55549

{
  "id": "896f5bfb16c510cb95a65104fbb4b656e48d03dea710fbcdfe04ab1a2c36817f",
  "url": "https://osv.dev/vulnerability/CLSA-2026-1788260731",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Fix CVE(s): CVE-2024-55549",
    "summary": "* SECURITY UPDATE: use-after-free of excluded namespace URIs - debian/patches/CVE-2024-55549.patch: intern excluded namespace URIs in the stylesheet dictionary instead of borrowing the namespace definition's href in libxslt/xslt.c. - CVE-2024-55549",
    "evidence": "osv:CLSA-2026-1788260731",
    "products": [
      {
        "name": {
          "value": "libxslt1-dev",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.1.29-5ubuntu0.3+tuxcare.els1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "libxslt1.1",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.1.29-5ubuntu0.3+tuxcare.els1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "python-libxslt1",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.1.29-5ubuntu0.3+tuxcare.els1",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "xsltproc",
          "evidence": "/affected/3/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.1.29-5ubuntu0.3+tuxcare.els1",
            "evidence": "/affected/3/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CLSA-2026-1788260731",
      "aliases": [
        "CLSA-2026-1788260731"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.1.29-5ubuntu0.3+tuxcare.els1"
                }
              ]
            }
          ],
          "package": {
            "name": "libxslt1-dev",
            "purl": "pkg:deb/tuxcare/libxslt1-dev?distro=ubuntu-18.04",
            "ecosystem": "TuxCare:Ubuntu:18.04"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1788260731.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.1.29-5ubuntu0.3+tuxcare.els1"
                }
              ]
            }
          ],
          "package": {
            "name": "libxslt1.1",
            "purl": "pkg:deb/tuxcare/libxslt1.1?distro=ubuntu-18.04",
            "ecosystem": "TuxCare:Ubuntu:18.04"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1788260731.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.1.29-5ubuntu0.3+tuxcare.els1"
                }
              ]
            }
          ],
          "package": {
            "name": "python-libxslt1",
            "purl": "pkg:deb/tuxcare/python-libxslt1?distro=ubuntu-18.04",
            "ecosystem": "TuxCare:Ubuntu:18.04"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1788260731.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.1.29-5ubuntu0.3+tuxcare.els1"
                }
              ]
            }
          ],
          "package": {
            "name": "xsltproc",
            "purl": "pkg:deb/tuxcare/xsltproc?distro=ubuntu-18.04",
            "ecosystem": "TuxCare:Ubuntu:18.04"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1788260731.json"
          }
        }
      ],
      "modified": "2026-10-26T09:32:04.126657273Z",
      "provider": "osv",
      "upstream": [
        "CVE-2024-55549"
      ],
      "references": [
        "https://errata.tuxcare.com/els_os/ubuntu18.04els/CLSA-2026-1788260731.html",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-55549"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2024-55549",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 449571,
  "published_at": "2026-09-01T11:05:43+00:00"
}