CVE-2025-54656CWE-117

Apache Struts Extras: Improper Output Neutralization for Logs

Medium · published July 30, 2025

CVSS v3.1
6.5
EPSS
1%
Percentile
49.3
In the wild
Unconfirmed
What it is

** 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.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00625 · 49.3th percentile
Weakness
CWE-117 · Improper Output Neutralization for Logs
Published
2025-07-30T15:58Z
EPSS history
Timeline
  • 30 JUL 15:58Z
    Apache Struts Extras: Improper Output Neutralization for Logs
    cvelistv5