Unscored severity · published Oct 20, 2026
CVE-2026-108086
Apache Cocoon: XEE could lead to SSRF and information disclosure
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CVSS
0.2%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 13% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AC
Apache Cocoon · Apache Software Foundation
0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-108086
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-108086
lists.apache.org
https://lists.apache.org/thread/mt0h1cpjzps76nq6op7714rmnq6pbtht
www.openwall.com
http://www.openwall.com/lists/oss-security/2026/10/20/2
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CVE-2026-108088
Apache Cocoon: Cross-user cache poisoning
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CVE-2026-108087
Apache Cocoon: SQL Injection
