Apache HTTP Server: mod_http2: heap corruption and RCE in assign_headers

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-119618
StatePUBLISHED
Assignerapache
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-11-11 15:17:15 UTC
Updated2026-11-12 10:17:28 UTC
DescriptionConcurrent 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.

Risk And Classification

Problem Types: CWE-362 | CWE-362 CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Apache Software Foundation Apache HTTP Server affected 2.4.55 2.4.70 semver Not specified

References

ReferenceSourceLinkTags
www.wiz.io/blog/cve-2026-119618-rce-apache-http-server-vulnerability af854a3a-2127-422b-91ae-364da2661108 www.wiz.io
httpd.apache.org/security/vulnerabilities_24.html [email protected] httpd.apache.org
github.com/AlmaLinux/updates/issues/4252 af854a3a-2127-422b-91ae-364da2661108 github.com
github.com/microsoft/azurelinux/pull/20165 af854a3a-2127-422b-91ae-364da2661108 github.com
access.redhat.com/security/cve/cve-2026-119618 af854a3a-2127-422b-91ae-364da2661108 access.redhat.com
www.openwall.com/lists/oss-security/2026/11/11/13 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com
bugs.gentoo.org/986161 af854a3a-2127-422b-91ae-364da2661108 bugs.gentoo.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Anthropic's OSS Scanner, as vulnerability ANT-2026-MAPKT6MZ (en)

CNA: Anthony Weems and Simon Scannell of the Google Cloud Vulnerability Research (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-10-26T12:00:00.000Zreported (Anthropic)
CNA2026-11-03T15:50:00.000Zreported (Google)

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