CVE-2021-21663

A missing permission check in Jenkins XebiaLabs XL Deploy Plugin 7.5.8 and earlier allows attackers with Overall/Read permission to connect to an attacker-specified URL using attacker-specified credentials IDs obtained through another method, capturing Username/password credentials stored in Jenkins.

• 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-1982Third Party 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-1982Third Party Advisory

Published

Jun 10, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

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