CVE-2026-108086 Apache Cocoon: XEE could lead to SSRF and information disclosure
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-108086?
CVE-2026-108086 is a high-severity vulnerability in Apache Cocoon, published on 20 Oct 2026.
Official description
** UNSUPPORTED WHEN ASSIGNED ** Improper restriction of recursive entity references in DTDs ('XML entity expansion') vulnerability in Apache Cocoon.
This issue affects Apache Cocoon: all versions. XEE in the fp: form processor could lead to SSRF, including exposing files from the server to an untrusted external system
As this project is retired, we do not plan to release a version that fixes this issue. Users are recommended to find an alternative or restrict access to the instance to trusted users.
NOTE: This vulnerability only affects products that are no longer supported by the maintainer.
Weakness: CWE-776
Which versions are affected by CVE-2026-108086?
How do I fix CVE-2026-108086?
No fix has been published for CVE-2026-108086 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-108086 being exploited?
There is no known exploitation of CVE-2026-108086 in the wild and no public exploit code.
Sources
Also known as GHSA-r2j3-wmm2-x45c.