CVE-2026-23918

Published: May 4, 2026Modified: Jul 15, 2026

8.8

Vector

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

Exploitability: 2.8 / Impact: 5.9

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

Description

Double Free and possible RCE vulnerability in Apache HTTP Server with the HTTP/2 protocol. This issue affects Apache HTTP Server: 2.4.66. Users are recommended to upgrade to version 2.4.67, which fixes the issue.

Affected (1)

Products: Apache: Http Server

Apache

1 product

Http Server

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Apache Http Server	Version 2.4.66

Related CWEs

CWE-1341

Multiple Releases of Same Resource or Handle

The product attempts to close or release a resource or handle more than once, without any successful open between the close operations.

CWE-415

Double Free

The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations.

References (6)

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

Source: security@apache.org

Vendor Advisory

http://www.openwall.com/lists/oss-security/2026/05/04/19

Source: af854a3a-2127-422b-91ae-364da2661108

Mailing ListThird Party Advisory

https://access.redhat.com/errata/RHSA-2026:13938

Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

https://access.redhat.com/security/cve/CVE-2026-23918

Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

https://bugzilla.redhat.com/show_bug.cgi?id=2465304

Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23918.json

Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

Timeline

No history available yet.