CVSS 3.1
5.4 mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:NCVE-2021-21660
Medium (5.4) in jenkins markdown formatter. EPSS 1.1% chance of exploitation in the next 30 days. Fixed in io.jenkins.plugins:markdown-formatter 0.2.0.
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.
Severity
- EPSS
- 1.1% chance of exploitation in the next 30 days; higher than 65% of CVEs (scores of 2026-10-31)
- CWE
- CWE-79
- Published
- Modified
- Record from
- the NVD, synced
Affected
- jenkins:markdown_formatter
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-xqpp-26pp-2365 | Maven | io.jenkins.plugins:markdown-formatter | <0.2.0 | 0.2.0 |
References
- http://www.openwall.com/lists/oss-security/2021/05/25/3
- 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
- https://www.jenkins.io/security/advisory/2021-05-25/#SECURITY-2198