CVE-2026-42536
Heap-based Buffer Overflow vulnerability in Apache HTTP Server with mod_xml2enc, xml2StartParse, and untrusted content This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67. Users are recommended to upgrade to version 2.4.68, which fixes the issue.
- Score
- CVSS 3.1 7.5 High
- Status
- Modified - security@apache.org
- Published
- 2026-06-08
- Last modified
- 2026-09-14
- Weaknesses
- CWE-120, CWE-122
Affected products
- Http Server (Apache)
- Apache Http Server (Apache Software Foundation)
- Enterprise Linux (Redhat)
- Enterprise Linux Eus (Redhat)
- Hummingbird (Redhat)
- Insights Proxy (Redhat)
- Jboss Core Services (Redhat)
- Rhel E4s (Redhat)
- Rhel Eus (Redhat)
References
- https://httpd.apache.org/security/vulnerabilities_24.html
- http://www.openwall.com/lists/oss-security/2026/06/08/9
- https://access.redhat.com/errata/RHSA-2026:25042
- https://access.redhat.com/errata/RHSA-2026:34109
- https://access.redhat.com/errata/RHSA-2026:41906
- https://access.redhat.com/errata/RHSA-2026:42828
- https://access.redhat.com/errata/RHSA-2026:47046
- https://access.redhat.com/errata/RHSA-2026:53371
- https://access.redhat.com/errata/RHSA-2026:56868
- https://access.redhat.com/errata/RHSA-2026:56869
- https://access.redhat.com/errata/RHSA-2026:62165
- https://access.redhat.com/errata/RHSA-2026:66323
- https://access.redhat.com/errata/RHSA-2026:67152
- https://access.redhat.com/security/cve/CVE-2026-42536
- https://bugzilla.redhat.com/show_bug.cgi?id=2486411
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42536.json
