// For flags

CVE-2021-21684

jenkins-2-plugins/git: stored XSS vulnerability

Severity Score

6.1
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

Jenkins Git Plugin 4.8.2 and earlier does not escape the Git SHA-1 checksum parameters provided to commit notifications when displaying them in a build cause, resulting in a stored cross-site scripting (XSS) vulnerability.

El plugin Git de Jenkins versiones 4.8.2 y anteriores, no escapa a los parámetros de suma de comprobación Git SHA-1 proporcionados a las notificaciones de commit cuando se muestran en una causa de construcción, resultando en una vulnerabilidad de tipo cross-site scripting (XSS) almacenado

A stored cross-site scripting (XSS) vulnerability was found in the Jenkins Git plugin. Due to not escaping the Git SHA-1 checksum parameters provided to commit notifications, an attacker is able to submit crafted commit notifications to the `/git/notifyCommit` endpoint.

Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution designed for on-premise or private cloud deployments. This advisory contains the container images for Red Hat OpenShift Container Platform 4.10.3. Issues addressed include bypass, cross site request forgery, denial of service, and traversal vulnerabilities.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
None
Integrity
Partial
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-01-04 CVE Reserved
  • 2021-10-06 CVE Published
  • 2024-08-03 CVE Updated
  • 2025-03-30 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
  • CWE-116: Improper Encoding or Escaping of Output
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Jenkins
Search vendor "Jenkins"
 Git
Search vendor "Jenkins" for product "Git"
 <= 4.8.2
Search vendor "Jenkins" for product "Git" and version " <= 4.8.2"
jenkins
Affected