CVE-2026-33002
March 18, 2026
Jenkins 2.442 through 2.554 (both inclusive), LTS 2.426.3 through LTS 2.541.2 (both inclusive) performs origin validation of requests made through the CLI WebSocket endpoint by computing the expected origin for comparison using the Host or X-Forwarded-Host HTTP request headers, making it vulnerable to DNS rebinding attacks that allow bypassing origin validation.
Affected Packages
https://github.com/jenkinsci/jenkins.git (GITHUB):
Affected version(s) >=jenkins-2.426.3 <jenkins-2.541.3Fix Suggestion:
Update to version jenkins-2.541.3https://github.com/jenkinsci/jenkins.git (GITHUB):
Affected version(s) >=jenkins-2.452.1-rc <jenkins-2.555Fix Suggestion:
Update to version jenkins-2.555org.jenkins-ci.main:jenkins-core (JAVA):
Affected version(s) >=2.442 <2.555Fix Suggestion:
Update to version 2.555org.jenkins-ci.main:jenkins-core (JAVA):
Affected version(s) >=2.426.3 <2.541.2Fix Suggestion:
Update to version 2.541.2Related Resources (4)
Do you need more information?
Contact UsCVSS v4
Base Score:
7.7
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
EPSS
Base Score:
0.05
