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CVE-2026-70427

MEDIUM
4.3
CVSS Score
Published: August 5, 2026 at 05:40 PM UTC
Updated: September 8, 2026 at 08:29 PM UTC
1 product affected across 1 vendorJenkins

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Severity
MEDIUM4.3
Exploit prediction
EPSS 0.7%
SSVC
No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Jenkins· Jenkinsjenkins-plugin
95%
v < 2.568.2v < 2.576
Vendor states this is fixed in 2.568.2 (unaffected)
Vendor states this is fixed in 2.576 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor Advisory
Source: cverecord
https://www.jenkins.io/security/advisory/2026-08-05/#SECURITY-3930

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.3MEDIUMCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-59

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