CVE-2021-21610

MediumCVSS 6.1/10Last modified Jun 17, 2026

Description

Jenkins 2.274 and earlier, LTS 2.263.1 and earlier does not implement any restrictions for the URL rendering a formatted preview of markup passed as a query parameter, resulting in a reflected cross-site scripting (XSS) vulnerability if the configured markup formatter does not prohibit unsafe elements (JavaScript) in markup.

Metrics

CVSS 3.1 6.1/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Weakness enumeration

CWE-79

Affected software

No affected versions have been published.

Timeline

Published: Jan 13, 2021
Last modified: Jun 17, 2026
NVD status: Modified

Related CVEs from 2021

CVE-2021-216115.4Jenkins 2.274 and earlier, LTS 2.263.1 and earlier does not escape display names and IDs of item types shown on the New Item page, resulting CVE-2021-216125.5Jenkins TraceTronic ECU-TEST Plugin 2.23.1 and earlier stores credentials unencrypted in its global configuration file on the Jenkins contro CVE-2021-216136.1Jenkins TICS Plugin 2020.3.0.6 and earlier does not escape TICS service responses, resulting in a cross-site scripting (XSS) vulnerability e CVE-2021-216145.5Jenkins Bumblebee HP ALM Plugin 4.1.5 and earlier stores credentials unencrypted in its global configuration file on the Jenkins controller CVE-2021-216155.3Jenkins 2.275 and LTS 2.263.2 allows reading arbitrary files using the file browser for workspaces and archived artifacts due to a time-of-c CVE-2021-216164.6Jenkins Active Choices Plugin 2.5.2 and earlier does not escape reference parameter values, resulting in a stored cross-site scripting (XSS)CVE-2021-216178.8A cross-site request forgery (CSRF) vulnerability in Jenkins Configuration Slicing Plugin 1.51 and earlier allows attackers to apply differe CVE-2021-216185.4Jenkins Repository Connector Plugin 2.0.2 and earlier does not escape parameter names and descriptions for past builds, resulting in a store CVE-2021-216195.4Jenkins Claim Plugin 2.18.1 and earlier does not escape the user display name, resulting in a stored cross-site scripting (XSS) vulnerabilit CVE-2021-21624.3Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Audit Plug-in). Supported versions that are affected are 5.7.3 CVE-2021-216204.3A cross-site request forgery (CSRF) vulnerability in Jenkins Claim Plugin 2.18.1 and earlier allows attackers to change claims.CVE-2021-216215.3Jenkins Support Core Plugin 2.72 and earlier provides the serialized user authentication as part of the "About user (basic authentication de