CVE-2021-21618

Name: CVE-2021-21618
Creator: NVD / NIST
Published: 2021-02-24T16:15:14.897+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 82.24%

Last modified Jun 17, 2026

CVE-2021-21618 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. Jenkins Repository Connector Plugin 2.0.2 and earlier does not escape parameter names and descriptions for past builds, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Item/Configure permission.. EPSS estimates a 82.24% chance of exploitation in the next 30 days.

Description

Jenkins Repository Connector Plugin 2.0.2 and earlier does not escape parameter names and descriptions for past builds, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Item/Configure permission.

Metrics

CVSS 3.1

5.4/10

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

EPSS Probability

82.24%

99.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Jenkins	Repository Connector	<= 2.0.2

References

https://www.jenkins.io/security/advisory/2021-02-24/#SECURITY-2183Vendor Advisory
https://www.jenkins.io/security/advisory/2021-02-24/#SECURITY-2183Vendor Advisory

Timeline

Published: Feb 24, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-21618?

How severe is CVE-2021-21618?

CVE-2021-21618 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 82.24% probability of exploitation in the next 30 days.

How do I fix CVE-2021-21618?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-21618?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST