What’s Vulnerable › Vulnerabilities
CVE-2026-70427
- Severity: medium (CVSS 4.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-08-05 · updated 2026-09-08
- Weakness: CWE-59
Description
Jenkins 2.575 and earlier, LTS 2.568.1 and earlier does not safely handle symbolic links with effectively empty names during the extraction of `.tar` and `.tar.gz` archives, allowing attackers able to control agent processes to provide crafted archives to the controller to write files to arbitrary locations on the file system, restricted only by file system access permissions of the user running Jenkins.
Affected products
- Jenkins: before 2.568.2; before 2.576 — fixed in 2.568.2, 2.576
How to fix
Upgrade to a fixed version: Jenkins 2.568.2, 2.576. Check the vendor advisory for mitigations.
References
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