CVE-2026-43951

Out-of-bounds Read vulnerability in Apache HTTP Server with mod_headers and mod_mime and multiple response languages. This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://httpd.apache.org/security/vulnerabilities_24.html	Vendor Advisory
http://www.openwall.com/lists/oss-security/2026/06/08/10	Mailing List Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-06-08 16:16

Updated : 2026-07-23 07:10

NVD link : CVE-2026-43951

Mitre link : CVE-2026-43951

CVE.ORG link : CVE-2026-43951

JSON object : View

Products Affected

apache

http_server

CWE

CWE-125

Out-of-bounds Read

{"id": "CVE-2026-43951", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-43951", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-06-08T18:13:37.250801Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 2.5, "exploitabilityScore": 3.9}]}, "affected": [{"source": "security@apache.org", "affectedData": [{"vendor": "Apache Software Foundation", "product": "Apache HTTP Server", "versions": [{"status": "affected", "version": "2.4.0", "versionType": "semver", "lessThanOrEqual": "2.4.67"}], "defaultStatus": "unaffected"}]}], "published": "2026-06-08T16:16:40.087", "references": [{"url": "https://httpd.apache.org/security/vulnerabilities_24.html", "tags": ["Vendor Advisory"], "source": "security@apache.org"}, {"url": "http://www.openwall.com/lists/oss-security/2026/06/08/10", "tags": ["Mailing List", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security@apache.org", "description": [{"lang": "en", "value": "CWE-125"}]}], "descriptions": [{"lang": "en", "value": "Out-of-bounds Read vulnerability in Apache HTTP Server with mod_headers and mod_mime and multiple response languages.\n\nThis issue affects Apache HTTP Server: from 2.4.0 through 2.4.67."}, {"lang": "es", "value": "Vulnerabilidad de lectura fuera de l\u00edmites en Servidor HTTP Apache con mod_headers y mod_mime y m\u00faltiples idiomas de respuesta.\n\nEste problema afecta a Servidor HTTP Apache: desde 2.4.0 hasta 2.4.67."}], "lastModified": "2026-07-23T07:10:00.113", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2A852E16-58B1-425F-98A7-E617B3DABC49", "versionEndIncluding": "2.4.67", "versionStartIncluding": "2.4.0"}], "operator": "OR"}]}], "sourceIdentifier": "security@apache.org"}