{"id":"CVE-2026-63686","summary":"Apache HTTP Server: mod_xml2enc crash on charset conversion failure","details":"A NULL pointer dereference in mod_xml2enc in Apache Software Foundation Apache HTTP Server before 2.4.69 on all platforms allows an untrusted backend server to cause a denial of service via a proxied response with a charset whose conversion partially succeeds then fails.\n\nUsers are recommended to upgrade to version 2.4.69, which fixes this issue.","aliases":["BIT-apache-2026-63686"],"modified":"2026-11-05T21:32:24.263176826Z","published":"2026-10-01T16:20:14.360Z","related":["ALSA-2026:88229","ALSA-2026:89860","ALSA-2026:92616","SUSE-SU-2026:5075-1","SUSE-SU-2026:5076-1","SUSE-SU-2026:5077-1","SUSE-SU-2026:5099-1"],"database_specific":{"unresolved_ranges":[{"extracted_events":[{"source":"AFFECTED_FIELD","strategy":"StandardRange","range":[{"introduced":"2.4.0"},{"last_affected":"2.4.68"}]}]}],"cna_assigner":"apache","cwe_ids":["CWE-476"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63686.json"},"references":[{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2026/10/01/25"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63686.json"},{"type":"ADVISORY","url":"https://httpd.apache.org/security/vulnerabilities_24.html"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-63686"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/apache/httpd","events":[{"introduced":"da5873e80d6eee7a0838793bf68f1d0254745fbb"},{"fixed":"1e06e9860794ce39605b79a0a787abfe084e5677"}],"database_specific":{"extracted_events":[{"range":[{"introduced":"2.4.0"},{"fixed":"2.4.69"}],"source":"CPE_RANGE","cpe":"cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*"}]}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-63686.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}