CVE-2018-1000822

Severity: critical (CVSS 10.0 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-12-20 · updated 2026-06-17
Weakness: CWE-611

Description

codelibs fess version before commit faa265b contains a XML External Entity (XXE) vulnerability in GSA XML file parser that can result in Disclosure of confidential data, denial of service, SSRF, port scanning. This attack appear to be exploitable via specially crafted GSA XML files. This vulnerability appears to have been fixed in after commit faa265b.

Affected products

codelibs Fess: before 12.2.3 — fixed in 12.2.3

How to fix

Upgrade to a fixed version: codelibs Fess 12.2.3. Check the vendor advisory for mitigations.

References

https://0dd.zone/2018/10/27/fess-XXE/
https://github.com/codelibs/fess/issues/1851
https://0dd.zone/2018/10/27/fess-XXE/
https://github.com/codelibs/fess/issues/1851

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