{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-63686","assignerOrgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","state":"PUBLISHED","assignerShortName":"apache","dateReserved":"2026-07-17T16:04:47.692Z","datePublished":"2026-10-01T16:20:14.360Z","dateUpdated":"2026-10-01T20:09:31.181Z"},"containers":{"cna":{"providerMetadata":{"orgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","shortName":"apache","dateUpdated":"2026-10-01T16:20:14.360Z"},"title":"Apache HTTP Server: mod_xml2enc crash on charset conversion failure","problemTypes":[{"descriptions":[{"description":"CWE-476 NULL Pointer Dereference","lang":"en","cweId":"CWE-476","type":"CWE"}]}],"source":{"discovery":"UNKNOWN"},"affected":[{"vendor":"Apache Software Foundation","product":"Apache HTTP Server","versions":[{"status":"affected","version":"2.4.0","lessThanOrEqual":"2.4.68","versionType":"semver"}],"defaultStatus":"unaffected"}],"descriptions":[{"value":"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.","lang":"en","supportingMedia":[{"type":"text/html","base64":false,"value":"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.<br><br>Users are recommended to upgrade to version 2.4.69, which fixes this issue."}]}],"references":[{"url":"https://httpd.apache.org/security/vulnerabilities_24.html","tags":["vendor-advisory"]}],"metrics":[{"other":{"type":"Textual description of severity","content":{"text":"low"}},"scenarios":[{"lang":"en","value":"GENERAL"}]}],"timeline":[{"time":"2026-06-14T16:08:00.000Z","lang":"en","value":"Report received"},{"time":"2026-10-01T12:00:00.000Z","lang":"en","value":"fixed in 2.4.x by r1938678"},{"time":"2026-10-01T12:00:00.000Z","lang":"eng","value":"2.4.69 released"}],"credits":[{"lang":"en","value":"Lucian Nitescu","type":"finder"},{"lang":"en","value":"Zhen Kong","type":"finder"}],"x_generator":{"engine":"Vulnogram 0.2.0"}},"adp":[{"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7.5,"attackVector":"NETWORK","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-10-01T19:34:34.341515Z","id":"CVE-2026-63686","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-10-01T19:34:37.183Z"}},{"title":"CVE Program Container","references":[{"url":"http://www.openwall.com/lists/oss-security/2026/10/01/25"}],"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2026-10-01T20:09:31.181Z"}}]}}