CVE-2026-63292

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-63292", "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "state": "PUBLISHED", "assignerShortName": "apache", "dateReserved": "2026-07-16T09:06:13.760Z", "datePublished": "2026-10-01T16:11:47.911Z", "dateUpdated": "2026-10-01T20:09:30.262Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "shortName": "apache", "dateUpdated": "2026-10-01T16:11:47.911Z"}, "title": "Apache HTTP Server: mod_vhost_alias stack overflow", "problemTypes": [{"descriptions": [{"description": "CWE-121 Stack-based Buffer Overflow", "lang": "en", "cweId": "CWE-121", "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": "Stack-based buffer overflow in mod_vhost_alias in Apache Software Foundation Apache HTTP Server through 2.4.68 on all platforms allows a remote client to cause a denial of service or potentially execute arbitrary code via an HTTP request with a Host header exceeding 8192 bytes when VirtualDocumentRoot uses a hostname format specifier and LimitRequestFieldSize is raised above the default.\n\nUsers are recommended to upgrade to version 2.4.69, which fixes this issue.", "lang": "en", "supportingMedia": [{"type": "text/html", "base64": false, "value": "Stack-based buffer overflow in mod_vhost_alias in Apache Software Foundation Apache HTTP Server through 2.4.68 on all platforms allows a remote client to cause a denial of service or potentially execute arbitrary code via an HTTP request with a Host header exceeding 8192 bytes when VirtualDocumentRoot uses a hostname format specifier and LimitRequestFieldSize is raised above the default.<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": "moderate"}}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "timeline": [{"time": "2026-06-17T23:29:00.000Z", "lang": "en", "value": "Report received"}, {"time": "2026-10-01T12:00:00.000Z", "lang": "en", "value": "fixed in 2.4.x by r1938676"}, {"time": "2026-10-01T12:00:00.000Z", "lang": "eng", "value": "2.4.69 released"}], "credits": [{"lang": "en", "value": "Hyojae Lee", "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": "2026-10-01T18:19:50.244775Z", "id": "CVE-2026-63292", "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": "2026-10-01T18:20:11.369Z"}}, {"title": "CVE Program Container", "references": [{"url": "http://www.openwall.com/lists/oss-security/2026/10/01/24"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2026-10-01T20:09:30.262Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "http://www.openwall.com/lists/oss-security/2026/10/01/24"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2026-10-01T20:09:30.262Z"}}, {"title": "CISA ADP Vulnrichment", "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": {"id": "CVE-2026-63292", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-01T18:19:50.244775Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-01T18:20:07.054Z"}}], "cna": {"title": "Apache HTTP Server: mod_vhost_alias stack overflow", "source": {"discovery": "UNKNOWN"}, "credits": [{"lang": "en", "type": "finder", "value": "Hyojae Lee"}, {"lang": "en", "type": "finder", "value": "Zhen Kong"}], "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": "2.4.0", "versionType": "semver", "lessThanOrEqual": "2.4.68"}], "defaultStatus": "unaffected"}], "timeline": [{"lang": "en", "time": "2026-06-17T23:29:00.000Z", "value": "Report received"}, {"lang": "en", "time": "2026-10-01T12:00:00.000Z", "value": "fixed in 2.4.x by r1938676"}, {"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 0.2.0"}, "descriptions": [{"lang": "en", "value": "Stack-based buffer overflow in mod_vhost_alias in Apache Software Foundation Apache HTTP Server through 2.4.68 on all platforms allows a remote client to cause a denial of service or potentially execute arbitrary code via an HTTP request with a Host header exceeding 8192 bytes when VirtualDocumentRoot uses a hostname format specifier and LimitRequestFieldSize is raised above the default.\n\nUsers are recommended to upgrade to version 2.4.69, which fixes this issue.", "supportingMedia": [{"type": "text/html", "value": "Stack-based buffer overflow in mod_vhost_alias in Apache Software Foundation Apache HTTP Server through 2.4.68 on all platforms allows a remote client to cause a denial of service or potentially execute arbitrary code via an HTTP request with a Host header exceeding 8192 bytes when VirtualDocumentRoot uses a hostname format specifier and LimitRequestFieldSize is raised above the default.<br><br>Users are recommended to upgrade to version 2.4.69, which fixes this issue.", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-121", "description": "CWE-121 Stack-based Buffer Overflow"}]}], "providerMetadata": {"orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "shortName": "apache", "dateUpdated": "2026-10-01T16:11:47.911Z"}}}, "cveMetadata": {"cveId": "CVE-2026-63292", "state": "PUBLISHED", "dateUpdated": "2026-10-01T20:09:30.262Z", "dateReserved": "2026-07-16T09:06:13.760Z", "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "datePublished": "2026-10-01T16:11:47.911Z", "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": "2.4.0", "versionType": "semver"}]}], "source": "security@apache.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*", "matchCriteriaId": "2571DF83-8980-4BEF-9EBE-AB2D9E6C03C7", "versionEndExcluding": "2.4.69", "versionStartIncluding": "2.4.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Stack-based buffer overflow in mod_vhost_alias in Apache Software Foundation Apache HTTP Server through 2.4.68 on all platforms allows a remote client to cause a denial of service or potentially execute arbitrary code via an HTTP request with a Host header exceeding 8192 bytes when VirtualDocumentRoot uses a hostname format specifier and LimitRequestFieldSize is raised above the default.\n\nUsers are recommended to upgrade to version 2.4.69, which fixes this issue."}], "id": "CVE-2026-63292", "lastModified": "2026-10-05T17:47:01.560", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-63292", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-01T18:19:50.244775Z", "version": "2.0.3"}}]}, "published": "2026-10-01T17:17:29.803", "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/2026/10/01/24"}], "sourceIdentifier": "security@apache.org", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-121"}], "source": "security@apache.org", "type": "Secondary"}]}

{"affected_release": [{"advisory": "RHSA-2026:74858", "cpe": "cpe:/a:redhat:hummingbird:1", "package": "httpd-main-2.4.69-1.hum1", "product_name": "Red Hat Hardened Images", "release_date": "2026-10-02T00:00:00Z"}], "bugzilla": {"description": "httpd: httpd: Arbitrary code execution via oversized Host header in mod_vhost_alias", "id": "2544832", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2544832"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.1", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "status": "verified"}, "cwe": "CWE-787", "details": ["A flaw was found in httpd's mod_vhost_alias module. A remote attacker can exploit a stack-based buffer overflow by sending a crafted HTTP request with an excessively large Host header to a server using specific virtual hosting configurations. This issue can lead to arbitrary code execution or cause a Denial of Service (DoS) by crashing the web server."], "mitigation": {"lang": "en:us", "value": "To mitigate this vulnerability without code modifications, ensure that `LimitRequestFieldSize` remains at or below its default limit of 8190 bytes, or disable the `mod_vhost_alias` module if dynamic virtual hosting is not required.\n1. Ensure `LimitRequestFieldSize` is not configured above 8190 in `/etc/httpd/conf/httpd.conf` or `/etc/httpd/conf.d/`:\n```\nLimitRequestFieldSize 8190\n```\n2. Alternatively, if `mod_vhost_alias` is not needed, disable it by commenting out its loading directive in `/etc/httpd/conf.modules.d/00-base.conf`:\n```\n# LoadModule vhost_alias_module modules/mod_vhost_alias.so\n```\n3. Validate the configuration syntax and reload the service:\n```\napachectl configtest\nsystemctl reload httpd\n```\nCaveats: Restricting `LimitRequestFieldSize` may reject legitimate requests that carry exceptionally large HTTP headers, returning a 400 Bad Request response. Disabling `mod_vhost_alias` prevents the use of dynamic virtual host directives such as `VirtualDocumentRoot`.\nWarning: Reloading or restarting the `httpd` daemon may briefly affect in-flight network connections."}, "name": "CVE-2026-63292", "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": "Affected", "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"}], "public_date": "2026-10-01T16:11:47Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-63292\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-63292\nhttp://www.openwall.com/lists/oss-security/2026/10/01/24\nhttps://httpd.apache.org/security/vulnerabilities_24.html"], "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[2.4.0,2.4.68]"}}], "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": "http_server", "vendor": "apache"}], "created": "2026-10-01T18:00:08.270627+00:00", "updated": "2026-10-02T14:15:15.504322+00:00", "vendors": ["apache", "apache$PRODUCT$http_server"]}