{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-29169", "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "state": "PUBLISHED", "assignerShortName": "apache", "dateReserved": "2026-03-04T11:50:32.014Z", "datePublished": "2026-05-04T14:48:29.832Z", "dateUpdated": "2026-05-04T15:53:03.670Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "Apache HTTP Server", "vendor": "Apache Software Foundation", "versions": [{"lessThanOrEqual": "2.4.66", "status": "affected", "version": "0", "versionType": "semver"}]}], "credits": [{"lang": "en", "type": "finder", "value": "Pavel Kohout, Aisle Research, Aisle.com"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "A NULL pointer dereference in mod_dav_lock in Apache HTTP Server 2.4.66 and earlier may allow an attacker to crash the server with a malicious request.mod_dav_lock is not used internally by mod_dav or mod_dav_fs.<br><br>The only known use-case for mod_dav_lock was mod_dav_svn from Apache Subversion earlier than version 1.2.0.<br><br>Users are recommended to upgrade to version 2.4.66, which fixes this issue, or remove mod_dav_lock.<br>"}], "value": "A NULL pointer dereference in mod_dav_lock in Apache HTTP Server 2.4.66 and earlier may allow an attacker to crash the server with a malicious request.mod_dav_lock is not used internally by mod_dav or mod_dav_fs.\n\nThe only known use-case for mod_dav_lock was mod_dav_svn from Apache Subversion earlier than version 1.2.0.\n\nUsers are recommended to upgrade to version 2.4.66, which fixes this issue, or remove mod_dav_lock."}], "metrics": [{"other": {"content": {"text": "low"}, "type": "Textual description of severity"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-476", "description": "CWE-476 NULL Pointer Dereference", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "shortName": "apache", "dateUpdated": "2026-05-04T14:48:29.832Z"}, "references": [{"tags": ["vendor-advisory"], "url": "https://httpd.apache.org/security/vulnerabilities_24.html"}], "source": {"discovery": "EXTERNAL"}, "timeline": [{"lang": "en", "time": "2026-03-04T11:46:00.000Z", "value": "Report received"}, {"lang": "eng", "time": "2026-05-04T12:00:00.000Z", "value": "2.4.67 released"}, {"lang": "en", "time": "2026-05-04T12:00:00.000Z", "value": "fixed in 2.4.x by r1933354"}], "title": "Apache HTTP Server: mod_dav_lock indirect lock crash", "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": "2026-05-04T15:52:40.756863Z", "id": "CVE-2026-29169", "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": "2026-05-04T15:53:03.670Z"}}]}}

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{"cveTags": [], "descriptions": [{"lang": "en", "value": "A NULL pointer dereference in mod_dav_lock in Apache HTTP Server 2.4.66 and earlier may allow an attacker to crash the server with a malicious request.mod_dav_lock is not used internally by mod_dav or mod_dav_fs.\n\nThe only known use-case for mod_dav_lock was mod_dav_svn from Apache Subversion earlier than version 1.2.0.\n\nUsers are recommended to upgrade to version 2.4.66, which fixes this issue, or remove mod_dav_lock."}], "id": "CVE-2026-29169", "lastModified": "2026-05-04T15:21:58.203", "metrics": {}, "published": "2026-05-04T15:16:03.720", "references": [{"source": "security@apache.org", "url": "https://httpd.apache.org/security/vulnerabilities_24.html"}], "sourceIdentifier": "security@apache.org", "vulnStatus": "Undergoing Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "security@apache.org", "type": "Primary"}]}

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