CVE-2026-23918

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.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://httpd.apache.org/security/vulnerabilities_24.html	Vendor Advisory
http://www.openwall.com/lists/oss-security/2026/05/04/19	Mailing List Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:13938
https://access.redhat.com/security/cve/CVE-2026-23918
https://bugzilla.redhat.com/show_bug.cgi?id=2465304
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23918.json

Configurations

Configuration 1 (hide)

cpe:2.3:a:apache:http_server:2.4.66:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-05-04 15:16

Updated : 2026-07-15 02:18

NVD link : CVE-2026-23918

Mitre link : CVE-2026-23918

CVE.ORG link : CVE-2026-23918

JSON object : View

Products Affected

apache

http_server

CWE

CWE-415

Double Free

CWE-1341

Multiple Releases of Same Resource or Handle

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{"cpes": ["cpe:/o:redhat:enterprise_linux:10"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 10", "packageName": "httpd", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected"}, {"cpes": ["cpe:/o:redhat:enterprise_linux:10"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 10", "packageName": "mod_http2", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected"}, {"cpes": ["cpe:/o:redhat:enterprise_linux:6"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 6", "packageName": "httpd", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected"}, {"cpes": ["cpe:/o:redhat:enterprise_linux:7"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 7", "packageName": "httpd", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected"}, {"cpes": 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