CVE-2021-21673
mediumpriority · track · 25EPSS 0.016 · 75 %ileEUUSEPSS · scored 2026-10-28
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (3)
Products and version ranges known to be affected.
advisories (1)
Vendor and ecosystem advisories describing this.
- GHSA-2vvr-5757-qp87Open redirect vulnerability in Jenkins CAS Plugin2022-05-24ghsa · osvUS
Jenkins CAS Plugin 1.6.0 and earlier improperly determines that a redirect URL after login is legitimately pointing to Jenkins. This allows attackers to perform phishing attacks by having users go to a Jenkins URL that will forward them to a different site after successful authentication. Jenkins CAS Plugin 1.6.1 only redirects to relative (Jenkins) URLs.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (9)
External citations — patches, advisories, analysis.
- http://www.openwall.com/lists/oss-security/2021/06/30/1cnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2021-21673cnnvd
- https://vigilance.fr/vulnerability/Jenkins-Plugins-five-vulnerabilities-35800cnnvd
- https://www.cybersecurity-help.cz/vdb/SB2021070110cnnvd
- https://www.jenkins.io/security/advisory/2021-06-30/#SECURITY-2387cnnvd
- http://www.openwall.com/lists/oss-security/2021/06/30/1enisa_euvd
- https://www.jenkins.io/security/advisory/2021-06-30/#SECURITY-2387enisa_euvd
- http://www.openwall.com/lists/oss-security/2021/06/30/1Mailing ListThird Party Advisorynvd
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