Red Hat Security Advisory: libxslt security update

{
  "id": "3b101e2929cfab5688207997e54824fa6ab7eada5f98e8e8e760dfe37d33b26a",
  "url": "https://osv.dev/vulnerability/RHSA-2026%3A6499",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Red Hat Security Advisory: libxslt security update",
    "summary": "Red Hat Security Advisory: libxslt security update",
    "evidence": "osv:RHSA-2026:6499",
    "products": [
      {
        "name": {
          "value": "libxslt",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "0:1.1.34-13.el9_6.1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "libxslt-debuginfo",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "0:1.1.34-13.el9_6.1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "libxslt-debugsource",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "0:1.1.34-13.el9_6.1",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "libxslt-devel",
          "evidence": "/affected/3/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "0:1.1.34-13.el9_6.1",
            "evidence": "/affected/3/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "RHSA-2026:6499",
      "aliases": [
        "RHSA-2026:6499"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "0:1.1.34-13.el9_6.1"
                }
              ]
            }
          ],
          "package": {
            "name": "libxslt",
            "purl": "pkg:rpm/redhat/libxslt",
            "ecosystem": "Red Hat:rhel_eus:9.6::appstream"
          },
          "database_specific": {
            "source": "https://security.access.redhat.com/data/osv/RHSA-2026:6499.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "0:1.1.34-13.el9_6.1"
                }
              ]
            }
          ],
          "package": {
            "name": "libxslt-debuginfo",
            "purl": "pkg:rpm/redhat/libxslt-debuginfo",
            "ecosystem": "Red Hat:rhel_eus:9.6::appstream"
          },
          "database_specific": {
            "source": "https://security.access.redhat.com/data/osv/RHSA-2026:6499.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
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                  "introduced": "0"
                },
                {
                  "fixed": "0:1.1.34-13.el9_6.1"
                }
              ]
            }
          ],
          "package": {
            "name": "libxslt-debugsource",
            "purl": "pkg:rpm/redhat/libxslt-debugsource",
            "ecosystem": "Red Hat:rhel_eus:9.6::appstream"
          },
          "database_specific": {
            "source": "https://security.access.redhat.com/data/osv/RHSA-2026:6499.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "0:1.1.34-13.el9_6.1"
                }
              ]
            }
          ],
          "package": {
            "name": "libxslt-devel",
            "purl": "pkg:rpm/redhat/libxslt-devel",
            "ecosystem": "Red Hat:rhel_eus:9.6::appstream"
          },
          "database_specific": {
            "source": "https://security.access.redhat.com/data/osv/RHSA-2026:6499.json"
          }
        }
      ],
      "modified": "2026-10-14T10:26:22Z",
      "provider": "osv",
      "upstream": [
        "CVE-2023-40403"
      ],
      "references": [
        "https://access.redhat.com/errata/RHSA-2026:6499",
        "https://access.redhat.com/security/updates/classification/#moderate",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2349766",
        "https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_6499.json",
        "https://access.redhat.com/security/cve/CVE-2023-40403",
        "https://www.cve.org/CVERecord?id=CVE-2023-40403",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-40403",
        "https://bugs.chromium.org/p/chromium/issues/detail?id=1356211",
        "https://bugzilla.gnome.org/show_bug.cgi?id=751621",
        "https://gitlab.gnome.org/GNOME/libxslt/-/issues/94",
        "https://support.apple.com/en-us/HT213927"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2023-40403",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 315983,
  "published_at": "2026-04-03T10:09:41+00:00"
}