CVE-2026-70427

MEDIUM

Jenkins Archive Extraction Symlink Arbitrary File Write

Generated titleSource: EIP title enrichment
STIX 2.1 vulnerability

Record summary

CVE-2026-70427 has a selected CVSS score of 4.3 (medium).

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.

Description source: CVE List

Exploitation context

CISA SSVC decision

ExploitationNone
AutomatableNo
Technical impactPartial

CISA Coordinator · SSVC 2.0.3 · Evaluated Aug 5, 2026 · Source: CVE List

Affected products and versions

1
ProductSourceVersion range

Jenkins

Browse Jenkins Project / Jenkins

Default status: affected

CVE List2.576 to < *unaffected
2.568.2 to < 2.568.*unaffected

References

2