9.8

CVE-2026-44631

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

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Apache ≫ HTTP Server Version >= 2.4.0 < 2.4.68
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.49% 0.38
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
134c704f-9b21-4f2e-91b3-4a467353bcc0 9.8 3.9 5.9
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE-124 Buffer Underwrite ('Buffer Underflow')

The product writes to a buffer using an index or pointer that references a memory location prior to the beginning of the buffer.

https://httpd.apache.org/security/vulnerabilities_24.html
Vendor Advisory
http://www.openwall.com/lists/oss-security/2026/06/08/14
Third Party Advisory
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