Jenkins Git Plugin < 4.8.3 XSS

medium Nessus Plugin ID 155627
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.


An application running on a remote web server host is affected by a cross-site scripting vulnerability.


According to its its self-reported version number, the version of the Jenkins Git Plugin running on the remote web server is prior to 4.8.3. It is, therefore, affected by a cross-site scripting vulnerability due to it not escaping 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.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.


Upgrade the Jenkins Git Plugin to version 4.8.3 or later.

See Also

Plugin Details

Severity: Medium

ID: 155627

File Name: jenkins_security_advisory_2021-10-06_plugins.nasl

Version: 1.2

Type: combined

Agent: windows, macosx, unix

Family: CGI abuses

Published: 11/19/2021

Updated: 11/22/2021

Dependencies: jenkins_plugins_detect.nbin, jenkins_win_installed.nbin, jenkins_nix_installed.nbin, macosx_jenkins_installed.nbin

Risk Information

CVSS Score Source: CVE-2021-21684


Risk Factor: Low

Score: 3


Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N

Temporal Vector: E:U/RL:OF/RC:C


Risk Factor: Medium

Base Score: 6.1

Temporal Score: 5.3

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:cloudbees:jenkins, cpe:/a:jenkins:jenkins

Required KB Items: installed_sw/Jenkins

Exploit Ease: No known exploits are available

Patch Publication Date: 10/6/2021

Vulnerability Publication Date: 8/12/2014

Reference Information

CVE: CVE-2021-21684