high8.8Public exploit code
CVE-2026-23918
Double Free and possible RCE vulnerability in Apache HTTP Server with the HTTP/2 protocol.
Public exploit code
Working exploit or proof of concept code has been published for this vulnerability. Treat unpatched systems as at risk.
- Apache HTTP Server 2.4.66 - 'mod_http2' Double-Free Denial of Service2026-05-26 · webapps · multiple
Impact
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 products
| Vendor | Product | Affected versions |
|---|---|---|
| Apache | Http Server | Version 2.4.66 |
Weakness classification
References
- NVD record
- CVE.org record
- https://httpd.apache.org/security/vulnerabilities_24.html
- http://www.openwall.com/lists/oss-security/2026/05/04/19
- 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