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

Overview

Severity

Critical (CVSS 9.8)

CVSS Vector

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

Exploit Status

Not Exploited

Patch Tuesday

2026-Oct

Released

2026-10-07

EPSS Score

0.60% (percentile: 47.0%)

Affected Products (1)

Other

• 0-17084

Revision History

• 2026-10-07: Information published.