CVE-2021-21619
XSS vulnerability in Jenkins Claim Plugin
5.4
MEDIUM
CVSS 3.1
EPSS 0.15%
Description
Jenkins Claim Plugin 2.18.1 and earlier does not escape the user display name shown in claims. This results in a stored cross-site scripting (XSS) vulnerability exploitable by attackers who are able to control the display names of Jenkins users, either via the security realm, or directly inside Jenkins. Everyone with a Jenkins account can change their own display name.\n\nClaim Plugin 2.18.2 escapes the user display name shown in claims.
How to fix CVE-2021-21619
To remediate CVE-2021-21619, upgrade the affected package to a fixed version below.
- —upgrade to 2.18.2 or later
Is CVE-2021-21619 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 2.18.2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |