CVE-2026-43951: CWE-125 Out-of-bounds Read in Apache Software Foundation Apache HTTP Server
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.
AI Analysis
Technical Summary
This vulnerability involves an out-of-bounds read (CWE-125) in Apache HTTP Server versions 2.4.0 through 2.4.67. It specifically affects configurations using mod_headers and mod_mime modules combined with multiple response languages. The flaw allows the server to read memory outside the intended buffer boundaries, which may lead to information disclosure or other unintended behavior. No CVSS score or detailed impact metrics are available, and no patch or official remediation has been announced by the Apache Software Foundation as of the published date.
Potential Impact
The out-of-bounds read could allow an attacker to access memory beyond the allocated buffer, potentially leading to information disclosure or server instability. However, without further details or known exploits, the exact impact remains unclear. No evidence of active exploitation has been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the Apache Software Foundation advisory for current remediation guidance. Until an official fix is released, consider limiting the use of mod_headers and mod_mime with multiple response languages if feasible. Monitor official Apache channels for updates.
CVE-2026-43951: CWE-125 Out-of-bounds Read in Apache Software Foundation Apache HTTP Server
Description
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 v3.1
Score 6.5medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves an out-of-bounds read (CWE-125) in Apache HTTP Server versions 2.4.0 through 2.4.67. It specifically affects configurations using mod_headers and mod_mime modules combined with multiple response languages. The flaw allows the server to read memory outside the intended buffer boundaries, which may lead to information disclosure or other unintended behavior. No CVSS score or detailed impact metrics are available, and no patch or official remediation has been announced by the Apache Software Foundation as of the published date.
Potential Impact
The out-of-bounds read could allow an attacker to access memory beyond the allocated buffer, potentially leading to information disclosure or server instability. However, without further details or known exploits, the exact impact remains unclear. No evidence of active exploitation has been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the Apache Software Foundation advisory for current remediation guidance. Until an official fix is released, consider limiting the use of mod_headers and mod_mime with multiple response languages if feasible. Monitor official Apache channels for updates.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-05-04T17:15:44.253Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a26e463e29bf47b501e0dca
Added to database: 6/8/2026, 3:48:51 PM
Last enriched: 6/8/2026, 4:05:48 PM
Last updated: 6/9/2026, 4:59:04 AM
Views: 10
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