CVE-2026-93546

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-93546", "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "state": "PUBLISHED", "assignerShortName": "apache", "dateReserved": "2026-09-18T09:17:50.552Z", "datePublished": "2026-10-01T16:19:32.662Z", "dateUpdated": "2026-10-01T20:09:35.921Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "shortName": "apache", "dateUpdated": "2026-10-01T16:19:32.662Z"}, "title": "Apache HTTP Server: mod_dav_fs namespace overflow", "problemTypes": [{"descriptions": [{"description": "CWE-190 Integer overflow or wraparound", "lang": "en", "cweId": "CWE-190", "type": "CWE"}]}], "source": {"discovery": "UNKNOWN"}, "affected": [{"vendor": "Apache Software Foundation", "product": "Apache HTTP Server", "versions": [{"status": "affected", "version": "0", "lessThanOrEqual": "2.4.68", "versionType": "semver"}], "defaultStatus": "unaffected"}], "descriptions": [{"value": "Integer overflow in mod_dav_fs in Apache HTTP Server through 2.4.68 allows an authenticated WebDAV client with write access to crash worker processes and persistently corrupt a directory's property database via PROPPATCH requests declaring many XML namespaces.", "lang": "en", "supportingMedia": [{"type": "text/html", "base64": false, "value": "Integer overflow in mod_dav_fs in Apache HTTP Server through 2.4.68 allows an authenticated WebDAV client with write access to crash worker processes and persistently corrupt a directory's property database via PROPPATCH requests declaring many XML namespaces."}]}], "references": [{"url": "https://httpd.apache.org/security/vulnerabilities_24.html", "tags": ["vendor-advisory"]}], "metrics": [{"other": {"type": "Textual description of severity", "content": {"text": "moderate"}}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "timeline": [{"time": "2026-07-28T12:00:00.000Z", "lang": "en", "value": "reported"}, {"time": "2026-10-01T12:00:00.000Z", "lang": "en", "value": "fixed in 2.4.x by r1938682"}, {"time": "2026-10-01T12:00:00.000Z", "lang": "eng", "value": "2.4.69 released"}], "credits": [{"lang": "en", "value": "Zhen Kong", "type": "finder"}, {"lang": "en", "value": "Calif.io in collaboration with Anthropic", "type": "finder"}, {"lang": "en", "value": "AISLE in partnership with Red Hat", "type": "finder"}], "x_generator": {"engine": "Vulnogram 1.0.3"}}, "adp": [{"metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2026-10-01T19:38:29.562581Z", "id": "CVE-2026-93546", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-01T19:38:34.954Z"}}, {"title": "CVE Program Container", "references": [{"url": "http://www.openwall.com/lists/oss-security/2026/10/01/30"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2026-10-01T20:09:35.921Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "http://www.openwall.com/lists/oss-security/2026/10/01/30"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2026-10-01T20:09:35.921Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2026-93546", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-10-01T19:38:29.562581Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-01T19:38:21.692Z"}}], "cna": {"title": "Apache HTTP Server: mod_dav_fs namespace overflow", "source": {"discovery": "UNKNOWN"}, "credits": [{"lang": "en", "type": "finder", "value": "Zhen Kong"}, {"lang": "en", "type": "finder", "value": "Calif.io in collaboration with Anthropic"}, {"lang": "en", "type": "finder", "value": "AISLE in partnership with Red Hat"}], "metrics": [{"other": {"type": "Textual description of severity", "content": {"text": "moderate"}}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"vendor": "Apache Software Foundation", "product": "Apache HTTP Server", "versions": [{"status": "affected", "version": "0", "versionType": "semver", "lessThanOrEqual": "2.4.68"}], "defaultStatus": "unaffected"}], "timeline": [{"lang": "en", "time": "2026-07-28T12:00:00.000Z", "value": "reported"}, {"lang": "en", "time": "2026-10-01T12:00:00.000Z", "value": "fixed in 2.4.x by r1938682"}, {"lang": "eng", "time": "2026-10-01T12:00:00.000Z", "value": "2.4.69 released"}], "references": [{"url": "https://httpd.apache.org/security/vulnerabilities_24.html", "tags": ["vendor-advisory"]}], "x_generator": {"engine": "Vulnogram 1.0.3"}, "descriptions": [{"lang": "en", "value": "Integer overflow in mod_dav_fs in Apache HTTP Server through 2.4.68 allows an authenticated WebDAV client with write access to crash worker processes and persistently corrupt a directory's property database via PROPPATCH requests declaring many XML namespaces.", "supportingMedia": [{"type": "text/html", "value": "Integer overflow in mod_dav_fs in Apache HTTP Server through 2.4.68 allows an authenticated WebDAV client with write access to crash worker processes and persistently corrupt a directory's property database via PROPPATCH requests declaring many XML namespaces.", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-190", "description": "CWE-190 Integer overflow or wraparound"}]}], "providerMetadata": {"orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "shortName": "apache", "dateUpdated": "2026-10-01T16:19:32.662Z"}}}, "cveMetadata": {"cveId": "CVE-2026-93546", "state": "PUBLISHED", "dateUpdated": "2026-10-01T20:09:35.921Z", "dateReserved": "2026-09-18T09:17:50.552Z", "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "datePublished": "2026-10-01T16:19:32.662Z", "assignerShortName": "apache"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Apache HTTP Server", "vendor": "Apache Software Foundation", "versions": [{"lessThanOrEqual": "2.4.68", "status": "affected", "version": "0", "versionType": "semver"}]}], "source": "security@apache.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*", "matchCriteriaId": "3CE7621B-8BBB-455B-8332-8AB510E3B6B4", "versionEndExcluding": "2.4.69", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Integer overflow in mod_dav_fs in Apache HTTP Server through 2.4.68 allows an authenticated WebDAV client with write access to crash worker processes and persistently corrupt a directory's property database via PROPPATCH requests declaring many XML namespaces."}], "id": "CVE-2026-93546", "lastModified": "2026-10-05T16:05:53.007", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-93546", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-10-01T19:38:29.562581Z", "version": "2.0.3"}}]}, "published": "2026-10-01T17:17:33.313", "references": [{"source": "security@apache.org", "tags": ["Vendor Advisory"], "url": "https://httpd.apache.org/security/vulnerabilities_24.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2026/10/01/30"}], "sourceIdentifier": "security@apache.org", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-190"}], "source": "security@apache.org", "type": "Secondary"}]}

{"bugzilla": {"description": "httpd: httpd: Denial of Service via integer overflow in mod_dav_fs", "id": "2544798", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2544798"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.4", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L", "status": "draft"}, "cwe": "CWE-190", "details": ["A flaw was found in httpd. An integer overflow in the mod_dav_fs module occurs when processing Web Distributed Authoring and Versioning (WebDAV) PROPPATCH requests that declare an excessive number of XML namespaces. An authenticated remote attacker with write access can exploit this flaw to crash server worker processes, causing a Denial of Service (DoS), and persistently corrupt the directory's property database."], "name": "CVE-2026-93546", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "httpd", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "httpd", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "httpd", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "httpd:2.4/httpd", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "httpd", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Affected", "package_name": "httpd", "product_name": "Red Hat Hardened Images"}], "public_date": "2026-10-01T16:19:32Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-93546\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-93546\nhttp://www.openwall.com/lists/oss-security/2026/10/01/30\nhttps://httpd.apache.org/security/vulnerabilities_24.html"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,2.4.68]"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Apache HTTP Server", "source": "cna", "vendor": "Apache Software Foundation"}, "product": "apache_http_server", "vendor": "apache"}], "created": "2026-10-01T18:15:10.045718+00:00", "updated": "2026-10-01T22:15:13.692539+00:00", "vendors": ["apache", "apache$PRODUCT$apache_http_server"]}