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Message-ID: <2df72d8d-1eb3-9b55-74bd-f4cb1af17a87@apache.org>
Date: Wed, 11 Nov 2026 12:19:30 +0000
From: Eric Covener <covener@...che.org>
To: oss-security@...ts.openwall.com
Subject: CVE-2026-119618: Apache HTTP Server: mod_http2: heap corruption
 and RCE in assign_headers 

Severity: critical 

Affected versions:

- Apache HTTP Server 2.4.55 through 2.4.70

Description:

Concurrent Execution using Shared Resource with Improper Synchronization vulnerability in Apache HTTP Server's mod_http2 in assign_headers() can lead to RCE.

This issue affects Apache HTTP Server: from 2.4.55 through 2.4.70.
Affected releases of mod_h2 from GitHub: from 2.0.8 through 2.0.42.

Credit:

Anthropic's OSS Scanner, as vulnerability ANT-2026-MAPKT6MZ (finder)
Anthony Weems and Simon Scannell of the Google Cloud Vulnerability Research (finder)

References:

https://httpd.apache.org/security/vulnerabilities_24.html
https://httpd.apache.org/
https://www.cve.org/CVERecord?id=CVE-2026-119618

Timeline:

2026-10-26: reported

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