CVE-2021-21660: Cross-site Scripting

May 25, 2021 (updated November 3, 2023)

Jenkins Markdown Formatter Plugin does not sanitize crafted link target URLs, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with the ability to edit any description rendered using the configured markup formatter.

References

nvd.nist.gov/vuln/detail/CVE-2021-21660
www.jenkins.io/security/advisory/2021-05-25/

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