Apache HTTP Server: mod_rewrite use-after-free via %{LA-U:HTTP:...}

{
  "id": "3f3b4eaa72791f81437bc40eb24916f05e1506890a9d95aa89d80cb17ab854ee",
  "url": "https://osv.dev/vulnerability/BIT-apache-2026-56154",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Apache HTTP Server: mod_rewrite use-after-free via %{LA-U:HTTP:...}",
    "summary": "Use After Free vulnerability in Apache HTTP Server's mod_rewrite when using lookahead (%{LA-U:HTTP:...}) This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68.",
    "evidence": "osv:BIT-apache-2026-56154",
    "products": [
      {
        "name": {
          "value": "apache",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.4.69",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "critical",
    "structured": {
      "id": "BIT-apache-2026-56154",
      "aliases": [
        "BIT-apache-2026-56154",
        "CVE-2026-56154"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "SEMVER",
              "events": [
                {
                  "introduced": "2.4.0"
                },
                {
                  "fixed": "2.4.69"
                }
              ]
            }
          ],
          "package": {
            "name": "apache",
            "purl": "pkg:bitnami/apache",
            "ecosystem": "Bitnami"
          },
          "severity": [
            {
              "type": "CVSS_V3",
              "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
            }
          ],
          "database_specific": {
            "source": "https://github.com/bitnami/vulndb/tree/main/data/apache/BIT-apache-2026-56154.json"
          }
        }
      ],
      "modified": "2026-10-06T15:15:02.571816566Z",
      "provider": "osv",
      "references": [
        "https://httpd.apache.org/security/vulnerabilities_24.html",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-56154"
      ],
      "provider_metadata": {
        "cpes": [
          "cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*"
        ],
        "severity": "Critical"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-56154",
        "evidence": "/aliases"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/database_specific/severity"
  },
  "source_id": "core-osv",
  "document_id": 89097,
  "published_at": "2026-10-06T11:40:51.83+00:00"
}