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Posted to announce@apache.org by Eric Covener <co...@apache.org> on 2026/10/01 18:07:12 UTC

CVE-2026-57941: Apache HTTP Server: mod_http2 use-after-free / wild write via shared session->bbtmp re-entrancy

Severity: moderate 

Affected versions:

- Apache HTTP Server 2.4.0 through 2.4.68

Description:

Use After Free vulnerability in Apache HTTP Server's mod_http2 via shared session->bbtmp re-entrancy



This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68.

Credit:

Lucian Nitescu (finder)
Simon Kappel (finder)
Gianluca Danesin, Altervista (finder)

References:

https://httpd.apache.org/security/vulnerabilities_24.html
https://httpd.apache.org/
https://www.cve.org/CVERecord?id=CVE-2026-57941

Timeline:

2026-06-15: reported
2026-10-01: fixed in 2.4.x by r1938665
2026-10-01: 2.4.69 released