CVE-2026-23918
Apache HTTP Server: http2: double free and possible RCE on early reset
- State
- Published
- Severity
- 8.8 High
- Published
- May 4, 2026
- Updated
- Jul 15, 2026
- Reserved
- Jan 19, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 8.8 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | CISA-ADP |
| 3.1 | 8.8 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | redhat-SADP |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
Apache HTTP ServerApache Software Foundation |
|
References
- https://httpd.apache.org/security/vulnerabilities_24.htmlvendor-advisory
- http://www.openwall.com/lists/oss-security/2026/05/04/19
- https://access.redhat.com/security/cve/CVE-2026-23918vdb-entry
- RHBZ#2465304issue-tracking
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23918.json
- https://access.redhat.com/errata/RHSA-2026:13938vendor-advisory
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