CVE-2021-21665

Name: CVE-2021-21665
Creator: NVD / NIST
Published: 2021-06-10T15:15:08.977+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.66%

Last modified Jun 17, 2026

CVE-2021-21665 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. A cross-site request forgery (CSRF) vulnerability in Jenkins XebiaLabs XL Deploy Plugin 10.0.1 and earlier allows attackers to connect to an attacker-specified URL using attacker-specified credentials IDs obtained through another method, capturing Username/password credentials stored in Jenkins.. EPSS estimates a 0.66% chance of exploitation in the next 30 days.

Description

A cross-site request forgery (CSRF) vulnerability in Jenkins XebiaLabs XL Deploy Plugin 10.0.1 and earlier allows attackers to connect to an attacker-specified URL using attacker-specified credentials IDs obtained through another method, capturing Username/password credentials stored in Jenkins.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

0.66%

46.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-352

Affected Software

Vendor	Product	Versions
Jenkins	Xebialabs Xl Deploy	<= 10.0.1

References

http://www.openwall.com/lists/oss-security/2021/06/10/14Mailing List, Third Party Advisory
https://www.jenkins.io/security/advisory/2021-06-10/#SECURITY-1982Vendor Advisory
http://www.openwall.com/lists/oss-security/2021/06/10/14Mailing List, Third Party Advisory
https://www.jenkins.io/security/advisory/2021-06-10/#SECURITY-1982Vendor Advisory

Timeline

Published: Jun 10, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-21665?

How severe is CVE-2021-21665?

CVE-2021-21665 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.66% probability of exploitation in the next 30 days.

How do I fix CVE-2021-21665?

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-2021-21665?

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

Scan your code now

Source: NVD / NIST