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CVE-2025-54656

Apache Struts Extras: Improper Output Neutralization for Logs

Published: Jul 30, 2025Updated: Nov 4, 2025 Sources: CVE List NVD GHSACWE-117
NVD MITRE
6.5CVSSMEDIUM
EPSS Score
0.5%
Top 59.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

** UNSUPPORTED WHEN ASSIGNED ** Improper Output Neutralization for Logs vulnerability in Apache Struts. This issue affects Apache Struts Extras: before 2. When using LookupDispatchAction, in some cases, Struts may print untrusted input to the logs without any filtering. Specially-crafted input may lead to log output where part of the message masquerades as a separate log line, confusing consumers of the logs (either human or automated).  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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:LI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-117

Affected Products

Apache Struts ExtrasApache Software Foundation
Mixed
Web & CMS Plugins / cms-core
org.apache.struts:struts-extrasMavenOSS Libraries
struts:strutsMavenOSS Libraries
struts extrasapache
Mixed
Web & CMS Plugins / cms-core
apache software foundationoss-projectUSWeb & CMS Pluginsaka apache foundation
mavenpackage-ecosystemOSS Libraries
apacheoss-projectUSWeb & CMS Pluginsaka apache http server, apache httpd

Exploitability

Official Patch Available

References

https://lists.apache.org/thread/so5cn07j2zn9vlf1xnfqp630wts719rr
lists.apache.org
https://nvd.nist.gov/vuln/detail/CVE-2025-54656
nvd.nist.gov
https://github.com/apache/struts
github.com
and 1 more references View all →

Timeline

Published
Jul 30, 2025
Last Updated
Nov 4, 2025

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