PT-2026-103930

Name of the Vulnerable Software and Affected Versions Apache HTTP Server versions 2.4.0 through 2.4.68 Description A Use After Free issue exists in the mod http2 module of the Apache HTTP Server. This occurs via shared session bbtmp re-entrancy, which can lead to memory corruption when the system...

Astra Linux – Vulnerability in Apache2

The Apache HTTP Server protocol handler for the HTTP/2 protocol checks the received request headers against the size limitations configured for the server. These restrictions are also applied to the HTTP/1 protocol. If any violations occur, an HTTP response is sent to the client with a status cod...

RHEL 10 : mod_http2 (RHSA-2026:50538)

The remote Redhat Enterprise Linux 10 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2026:50538 advisory. The modh2 Apache httpd module implements the HTTP2 protocol h2+h2c on top of libnghttp2 for httpd 2.4 servers. Security Fixes: modhttp2:...

K000162728: Apache HTTP Server vulnerability CVE-2026-48913

Security Advisory Description Use After Free vulnerability in Apache HTTP Server module modhttp2 when file handles are already exhausted. This issue affects Apache HTTP Server: from 2.4.55 through 2.4.67. CVE-2026-48913 Impact There is no impact; F5 products are not affected by this vulnerability...

mod_http2 security update

2.0.26-6.1 - Resolves: RHEL-182417 - modhttp2: HTTP/2: Remote Denial of Service via compression bomb and Slowloris-style attack CVE-2026-49975 2.0.26-6 - Resolves: RHEL-166293 - httpd: Apache HTTP Server: HTTP/2 DoS by Memory Increase CVE-2025-53020...

mod_http2 security update

An update is available for modhttp2. This update affects Rocky Linux 10. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list The modh2 Apache httpd module implements the HTTP2 protocol h2+h2c on top o...

RockyLinux 10 : mod_http2 (RLSA-2026:25225)

The remote RockyLinux 10 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2026:25225 advisory. httpd: HTTP/2: Remote Denial of Service via compression bomb and Slowloris-style attack CVE-2026-49975 Tenable has extracted the preceding description block...

Apache HTTP Server: mod_http2 denial of service

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CVE-2026-49975 Apache HTTP Server: mod_http2 denial of service

Memory Allocation with Excessive Size Value vulnerability in Apache HTTP Server's modhttp leads to denial of service via malicious HTTP requests. This issue affects Apache HTTP Server: from 2.4.17 through 2.4.67...

CVE-2026-48913 Apache HTTP Server: mod_http2 memory corruption when file handles exhausted

Use After Free vulnerability in Apache HTTP Server module modhttp2 when file handles are already exhausted. This issue affects Apache HTTP Server: from 2.4.55 through 2.4.67...

CVE-2026-48913 Apache HTTP Server: mod_http2 memory corruption when file handles exhausted

Use After Free vulnerability in Apache HTTP Server module modhttp2 when file handles are already exhausted. This issue affects Apache HTTP Server: from 2.4.55 through 2.4.67...

EUVD-2026-35101

Use After Free vulnerability in Apache HTTP Server module modhttp2 when file handles are already exhausted. This issue affects Apache HTTP Server: from 2.4.55 through 2.4.67...

AlmaLinux 9 : mod_http2 (ALSA-2026:22551)

The remote AlmaLinux 9 host has a package installed that is affected by a vulnerability as referenced in the ALSA-2026:22551 advisory. httpd: Apache HTTP Server: HTTP/2 DoS by Memory Increase CVE-2025-53020 Tenable has extracted the preceding description block directly from the AlmaLinux security...

USN-8338-2 apache2 regression

USN-8338-1 fixed vulnerabilities in Apache HTTP Server. The update introduced a regression that prevented modhttp2 from loading on Ubuntu 18.04 LTS. This update fixes the problem. We apologize for the inconvenience. Original advisory details: It was discovered that Apache HTTP Server incorrectly...

Important: mod_http2

Issue Overview: 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. CVE-2026-23918 Affected Packages: modhttp2 Issue Correction: Run dnf...

Exploit for Double Free in Apache Http_Server

CVE-2026-23918 — Apache modhttp2 Double Free Affected: A...

Apache mod_http2 Double-Free Detector

This is a python script that assist with detecting whether or not a server is vulnerable to the Apache modhttp2 double-free vulnerability...

Exploit for Double Free in Apache Http_Server

CVE-2026-23918 Apache modhttp2 Double-Free Detector ht...

CLSA-2026-1778070287 mod_http2: Fix of CVE-2026-23918

CVE-2026-23918: fix double free via double stream purge in modhttp2...

RHEL 9 : mod_http2 (RHSA-2025:14983)

The remote Redhat Enterprise Linux 9 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2025:14983 advisory. The modh2 Apache httpd module implements the HTTP2 protocol h2+h2c on top of libnghttp2 for httpd 2.4 servers. Security Fixes: httpd: modproxyhttp2:...