CVE-2026-44631: CWE-124: Buffer Underwrite in Apache Software Foundation Apache HTTP Server
Buffer Underwrite vulnerability in Apache HTTP Server on crafted regular expressions in the configuration. This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67. Users are recommended to upgrade to version 2.4.68, which fixes the issue.
AI Analysis
Technical Summary
This vulnerability involves a buffer underwrite (CWE-124) triggered by specially crafted regular expressions in the configuration of Apache HTTP Server versions 2.4.0 to 2.4.67. Buffer underwrite can lead to memory corruption, potentially causing crashes or other unintended behavior. The Apache Software Foundation has fixed this issue in version 2.4.68. No CVSS score is provided, and no official remediation level is stated in the data, but upgrading to 2.4.68 is recommended.
Potential Impact
The vulnerability could allow memory corruption due to buffer underwrite when processing crafted regular expressions in the server configuration. This may lead to denial of service or other unpredictable behavior. There are no known exploits in the wild currently. The exact impact severity is not quantified by CVSS but could be significant depending on exploitation context.
Mitigation Recommendations
Users should upgrade Apache HTTP Server to version 2.4.68 or later, which contains the fix for this vulnerability. Patch status is confirmed by the vendor's recommendation to upgrade. No other mitigation guidance is provided or required.
CVE-2026-44631: CWE-124: Buffer Underwrite in Apache Software Foundation Apache HTTP Server
Description
Buffer Underwrite vulnerability in Apache HTTP Server on crafted regular expressions in the configuration. This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67. Users are recommended to upgrade to version 2.4.68, which fixes the issue.
CVSS v3.1
Score 9.8critical
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a buffer underwrite (CWE-124) triggered by specially crafted regular expressions in the configuration of Apache HTTP Server versions 2.4.0 to 2.4.67. Buffer underwrite can lead to memory corruption, potentially causing crashes or other unintended behavior. The Apache Software Foundation has fixed this issue in version 2.4.68. No CVSS score is provided, and no official remediation level is stated in the data, but upgrading to 2.4.68 is recommended.
Potential Impact
The vulnerability could allow memory corruption due to buffer underwrite when processing crafted regular expressions in the server configuration. This may lead to denial of service or other unpredictable behavior. There are no known exploits in the wild currently. The exact impact severity is not quantified by CVSS but could be significant depending on exploitation context.
Mitigation Recommendations
Users should upgrade Apache HTTP Server to version 2.4.68 or later, which contains the fix for this vulnerability. Patch status is confirmed by the vendor's recommendation to upgrade. No other mitigation guidance is provided or required.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-05-07T12:39:02.065Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a26e468e29bf47b501e3130
Added to database: 6/8/2026, 3:48:56 PM
Last enriched: 6/8/2026, 4:05:16 PM
Last updated: 6/9/2026, 6:10:10 AM
Views: 7
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