Apache Struts Extras: Improper Output Neutralization for Logs
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and GitHub.
Summary
** 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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Apache | Apache Struts Extras | before 2 | 2 | Patch available | CNA |
| — | org.apache.struts:struts-extras (Maven) | up to 1.3.10 | — | No fix listed | GHSA-cx25-xg7c-xfm5 |
| — | struts:struts (Maven) | — | — | No fix listed | GHSA-cx25-xg7c-xfm5 |
- Apache Struts Extras VendorApache Affected before 2 Fixed in 2 Patch available CNA
- org.apache.struts:struts-extras (Maven) Vendor— Affected up to 1.3.10 Fixed in — No fix listed GHSA-cx25-xg7c-xfm5
- struts:struts (Maven) Vendor— Affected — Fixed in — No fix listed GHSA-cx25-xg7c-xfm5
Remediation
- Fix · CNA Apache Struts Extras (Apache Software Foundation) Fixed in 2
Timeline
- 2026-10-02 Threatist record created from CVE-2025-54656
- 2026-10-03 Alias added: GHSA-cx25-xg7c-xfm5
- 2026-10-31 EPSS moved to the 50th–90th percentile
References
Sources
- CVE-2025-54656 · CVE Program
- CVE-2025-54656 · NVD
- FIRST EPSS
- GHSA-cx25-xg7c-xfm5 · GitHub Advisory Database · CC BY 4.0
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