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CVE-2026-44631 | Mondoo Vulnerability Intelligence

Vulnerability IntelligenceCVE-2026-44631

CVE-2026-44631

CRITICAL9.8

Apache HTTP Server: Heap Underflow in `ap_regname` via Signed Char Overflow

Published Jun 8, 2026

Modified 2 weeks ago

Details

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.

References

http://www.openwall.com/lists/oss-security/2026/06/08/14

https://httpd.apache.org/security/vulnerabilities_24.html

https://www.cve.org/CVERecord?id=CVE-2026-44631

CVSS Analysis

CVSS v3.1

9.8

Exploitability

Attack Vector

NetworkAV:N

Attack Complexity

LowAC:L

Privileges Required

NonePR:N

User Interaction

NoneUI:N

Scope

Scope

UnchangedS:U

Impact

Confidentiality

HighC:H

Integrity

HighI:H

Availability

HighA:H

9.8/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

Other

Ecosystems

Timeline

PublishedJun 8, 2026

ModifiedJun 8, 2026