8.8
High
CVE-2026-19429 Jenkins FilePath.untarFrom() does not validate symlink targets when extracting TAR archives, allowing an attacker with…
Description
Jenkins FilePath.untarFrom() does not validate symlink targets when extracting TAR archives, allowing an attacker with Item/Configure permission to create symlinks from a workspace to arbitrary files on the Jenkins controller. This issue remains exploitable in versions patched for CVE-2026-33001 and CVE-2026-70427. An attacker can use this to read sensitive files from $JENKINS_HOME, including Jenkins cryptographic keys and stored credentials. Jenkins 2.576 is additionally affected by a Unicode zero-width character bypass of the blank-name validation introduced by CVE-2026-70427.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Jenkins 1.0 | 1.0 → 2.577 | No fix stated |
Other CVEs of Jenkins
The 153 CVEs of Jenkins →
CVE-2026-117626
Jenkins 2.587 and earlier, LTS 2.580.1 and earlier improperly identifies file paths attempting path traversal in the…
4.3
Medium
CVE-2026-117625
A missing permission check in Jenkins 2.587 and earlier, LTS 2.580.1 and earlier allows attackers with Overall/Read…
4.3
Medium
CVE-2026-117624
Jenkins 2.587 and earlier, LTS 2.580.1 and earlier does not consistently enforce the restriction on deserializing…
8.8
High
CVE-2026-117623
Jenkins 2.587 and earlier, LTS 2.580.1 and earlier does not escape the text shown in the tooltips of breadcrumb bar…
5.4
Medium