CVE-2021-21660: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

May 24, 2022 (updated December 15, 2022)

Jenkins Markdown Formatter Plugin 0.1.0 and earlier 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

www.openwall.com/lists/oss-security/2021/05/25/3
github.com/advisories/GHSA-xqpp-26pp-2365
nvd.nist.gov/vuln/detail/CVE-2021-21660
www.jenkins.io/security/advisory/2021-05-25/
www.whitesourcesoftware.com/vulnerability-database/CVE-2021-21660

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