Jenkins 2.527/LTS 2.516.2: Log Injection via Unrestricted Char in Log Msg
CVE-2025-59476 Published on September 17, 2025
Jenkins 2.527 and earlier, LTS 2.516.2 and earlier does not restrict or transform the characters that can be inserted from user-specified content in log messages, allowing attackers able to control log message contents to insert line break characters, followed by forged log messages that may mislead administrators reviewing log output.
Vulnerability Analysis
CVE-2025-59476 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality, with no impact on integrity, and no impact on availability.
Weakness Type
Improper Output Neutralization for Logs
The software does not neutralize or incorrectly neutralizes output that is written to logs.
Products Associated with CVE-2025-59476
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Affected Versions
Jenkins Project Jenkins:- Version 2.516.3 and below 2.516.* is unaffected.
- Version 2.528 and below * is unaffected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.