Vulnerability · Published Feb 24, 2021 · Assigned by jenkins
CVE-2021-21619
Medium 5.4
In plain English
A medium-severity security flaw in Jenkins Claim Plugin from Jenkins project. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 9.4% (higher than 95% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)5.4Medium
Exploit odds (30 days)9.4%top 4.6% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Jenkins Claim Plugin 2.18.1 and earlier does not escape the user display name, resulting 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Maven | org.jenkins-ci.plugins:claim | 2.18.2 | GHSA-48hr-jg4p-w4p4 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Jenkins project | Jenkins Claim Plugin | unspecified – through 2.18.1 |
References
- https://www.jenkins.io/security/advisory/2021-02-24/#SECURITY-2188%20%281%29 x_refsource_CONFIRM
- [oss-security] 20210224 Multiple vulnerabilities in Jenkins plugins mailing-list, x_refsource_MLIST