XML External Entity (XXE) vulnerability in codelibs fess

published 2018-12-20 7 y ago modified 2026-06-17 4 mo ago also GHSA-77hp-pfxw-4w63 , EUVD-2018-0800

cvss: 10.0; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.9%; EPSS 1.9% chance of exploitation in 30 days, percentile 80%
public exploits: 0; none known

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.

Patch / fix

fixed in 2 links 1

maven org.codelibs.fess:fess 12.3.2
codelibs fess 12.2.3

github.com/codelibs/fess/issues/1851 advisory

Exploit prediction

1.94% chance of exploitation in the next 30 days, higher than 80% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.0	10.0	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
NVD	2.0	7.5	AV:N/AC:L/Au:N/C:P/I:P/A:P
GitHub	3.0	10.0	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Affected packages

ecosystem	package	affected	fixed in
maven	org.codelibs.fess:fess	<12.3.2	12.3.2

Classification

Weakness

CWE-611 Improper Restriction of XML External Entity Reference

References

github.com /codelibs/fess/issues/1851
web, issue-tracking, patch, third-party-advisory
0dd.zone /2018/10/27/fess-XXE/
third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2018-1000822
advisory
0dd.zone /2018/10/27/fess-XXE
web
github.com /advisories/GHSA-77hp-pfxw-4w63
advisory
github.com /codelibs/fess
package

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary