CVE-2021-21673

medium

Description

Jenkins CAS Plugin 1.6.0 and earlier improperly determines that a redirect URL after login is legitimately pointing to Jenkins, allowing attackers to perform phishing attacks.

References

https://github.com/advisories/GHSA-2vvr-5757-qp87

https://www.jenkins.io/security/advisory/2021-06-30/#SECURITY-2387

http://www.openwall.com/lists/oss-security/2021/06/30/1

Details

Source: Mitre, NVD

Published: 2021-06-30

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 5.8

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 6.1

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