Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Jenkins Project | Jenkins | — | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | jenkins-2 +6 | 2.528-r0 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Maven | org.jenkins-ci.main:jenkins-core | < 2.516.3 | 2.516.3 | GHSA-qrh5-jg98-cr48 |
| Maven | org.jenkins-ci.main:jenkins-core | >= 2.517, < 2.528 | 2.528 | GHSA-qrh5-jg98-cr48 |
Advisories 1
- WID-SEC-2025-2086 Jenkins: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 23, 2025
References
- Jenkins Security Advisory 2025-09-17 vendor-advisory