CVE-2026-70427
Published:August 05, 2026
Updated:August 06, 2026
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 Packages
https://github.com/jenkinsci/jenkins.git (GITHUB):
Affected version(s) =jenkins-2.575 <jenkins-2.576Fix Suggestion:
Update to version jenkins-2.576https://github.com/jenkinsci/jenkins.git (GITHUB):
Affected version(s) =jenkins-2.568.1 <jenkins-2.568.2Fix Suggestion:
Update to version jenkins-2.568.2org.jenkins-ci.main:jenkins-core (JAVA):
Affected version(s) >=2.569 <2.576Fix Suggestion:
Update to version 2.576org.jenkins-ci.main:jenkins-core (JAVA):
Affected version(s) >=1.396 <2.568.2Fix Suggestion:
Update to version 2.568.2Related Resources (1)
Do you need more information?
Contact UsCVSS v4
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
4.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Improper Link Resolution Before File Access ('Link Following')