Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Apache | Http Server | >= 2.4.0, < 2.4.68 |
Related Weaknesses (CWE)
References
- https://httpd.apache.org/security/vulnerabilities_24.htmlVendor Advisory
- http://www.openwall.com/lists/oss-security/2026/06/08/9Mailing ListThird Party Advisory
- 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/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
FAQ
What is CVE-2026-42536?
CVE-2026-42536 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 rec...
How severe is CVE-2026-42536?
CVE-2026-42536 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-42536?
Check the references section above for vendor advisories and patch information. Affected products include: Apache Http Server.