CVE-2026-63686
Last modified
CVE-2026-63686 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A NULL pointer dereference in mod_xml2enc in Apache Software Foundation Apache HTTP Server before 2.4.69 on all platforms allows an untrusted backend server to cause a denial of service via a proxied response with a charset whose conversion partially succeeds then fails. Users are recommended to upgrade to version 2.4.69, which fixes this issue.. EPSS estimates a 0.33% chance of exploitation in the next 30 days.
Description
A NULL pointer dereference in mod_xml2enc in Apache Software Foundation Apache HTTP Server before 2.4.69 on all platforms allows an untrusted backend server to cause a denial of service via a proxied response with a charset whose conversion partially succeeds then fails. Users are recommended to upgrade to version 2.4.69, which fixes this issue.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Apache | Http Server | >= 2.4.0, < 2.4.69 |
References
- https://httpd.apache.org/security/vulnerabilities_24.htmlVendor Advisory
- https://www.openwall.com/lists/oss-security/2026/10/01/25Mailing List, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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