CVE-2026-49975
Memory Allocation with Excessive Size Value vulnerability in Apache HTTP Server's mod_http leads to denial of service via malicious HTTP requests. This issue affects Apache HTTP Server: from 2.4.17 through 2.4.67.
- Score
- CVSS 3.1 7.5 High
- Status
- Modified - security@apache.org
- Published
- 2026-06-08
- Last modified
- 2026-08-19
- Weaknesses
- CWE-409, CWE-789
Affected products
- Http Server (Apache)
- Apache Http Server (Apache Software Foundation)
- Debian Linux (Debian)
- Enterprise Linux (Redhat)
- Enterprise Linux Eus (Redhat)
- Hummingbird (Redhat)
- Jboss Core Services (Redhat)
- Jboss Enterprise Web Server (Redhat)
- Rhel Aus (Redhat)
- Rhel E4s (Redhat)
- Rhel Eus (Redhat)
- Rhel Eus Long Life (Redhat)
- Rhel Tus (Redhat)
- Service Mesh (Redhat)
References
- https://httpd.apache.org/security/vulnerabilities_24.html
- http://www.openwall.com/lists/oss-security/2026/06/03/3
- http://www.openwall.com/lists/oss-security/2026/06/08/16
- https://lists.debian.org/debian-lts-announce/2026/06/msg00009.html
- https://access.redhat.com/errata/RHSA-2026:25042
- https://access.redhat.com/errata/RHSA-2026:25057
- https://access.redhat.com/errata/RHSA-2026:25090
- https://access.redhat.com/errata/RHSA-2026:25225
- https://access.redhat.com/errata/RHSA-2026:27114
- https://access.redhat.com/errata/RHSA-2026:27200
- https://access.redhat.com/errata/RHSA-2026:27201
- https://access.redhat.com/errata/RHSA-2026:36373
- https://access.redhat.com/errata/RHSA-2026:36831
- https://access.redhat.com/errata/RHSA-2026:36846
- https://access.redhat.com/errata/RHSA-2026:50538
- https://access.redhat.com/errata/RHSA-2026:50572
- https://access.redhat.com/errata/RHSA-2026:55930
- https://access.redhat.com/errata/RHSA-2026:55992
- https://access.redhat.com/security/cve/CVE-2026-49975
- https://bugzilla.redhat.com/show_bug.cgi?id=2485371
- https://github.com/EQSTLab/CVE-2026-49975
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-49975.json
