CVE-2026-84647
Published:September 02, 2026
Updated:September 22, 2026
In Stapler 2107.v8dfcb_e8ed317 and earlier, except 2088.2093.vd7c3e58008a_6, included in Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, Stapler does not restrict the types of objects that can be instantiated via form data binding to those compatible with the expected field type, allowing attackers with Overall/Read permission to instantiate types related to configuration for which that field type was not intended.
Affected Packages
https://github.com/jenkinsci/stapler.git (GITHUB):
Affected version(s) >=2092.v91b_2c63e0c97 <2117.vb_66952503166Fix Suggestion:
Update to version 2117.vb_66952503166org.jenkins-ci.main:jenkins-core (JAVA):
Affected version(s) >=1.396 <2.580Fix Suggestion:
Update to version 2.580org.kohsuke.stapler:stapler (JAVA):
Affected version(s) >=2092.v91b_2c63e0c97 <2117.vb_66952503166Fix Suggestion:
Update to version 2117.vb_66952503166org.jenkins-ci.main:jenkins-core (JAVA):
Affected version(s) >=2.568 <2.568.3Fix Suggestion:
Update to version 2.568.3Related Resources (1)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
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:
8.8
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Deserialization of Untrusted Data
EPSS
Base Score:
0.43