CVE-2021-21660

CVE-2021-21660

EPSS 1.1%

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.

Affected products

Jenkins project · Jenkins Markdown Formatter Plugin

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References

https://www.jenkins.io/security/advisory/2021-05-25/#SECURITY-2198 https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-21660 http://www.openwall.com/lists/oss-security/2021/05/25/3