Apache Struts Extras Before 2 has an Improper Output Neutralization for Logs Vulnerability

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

6.5 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

EPSS

• CVE-2025-54656: 0.67% estimated exploitation activity in the next 30 days; percentile 52.09 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

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.

Published by the source

30 Jul 2025, 18:31 UTC

Last modified by the source

14 Nov 2025, 22:46 UTC

Source last checked

26 Oct 2026, 16:41 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-cx25-xg7c-xfm5

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# Patch Next advisory brief: CVE-2025-54656

Advisory: Apache Struts Extras Before 2 has an Improper Output Neutralization for Logs Vulnerability
IDs: CVE-2025-54656, GHSA-cx25-xg7c-xfm5
Record: https://patchnext.com/advisories/cve-2025-54656 (revision 1, source checked 26 Oct 2026, 16:41 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 6.5)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor response not established. A vendor fix does not mean a deployment is fixed.

## Affected components
- Maven org.apache.struts:struts-extras: affected <= 1.3.10
- Maven struts:struts: affected >= 1.2.9, <= 1.2.9

## Suggested inspection (read-only)
- Maven org.apache.struts:struts-extras: check the installed version with your package manager.
- Maven struts:struts: check the installed version with your package manager.

## Supported action
No complete vendor fix is recorded. Follow the primary source's mitigation guidance and check this record again before closing anything.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on org.apache.struts:struts-extras, struts:struts.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-cx25-xg7c-xfm5 (GitHub-reviewed advisory GHSA-cx25-xg7c-xfm5 lists affected ranges: Maven org.apache.struts:struts-extras >=0 =1.2.9 <=1.2.9)

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