medium5.4
CVE-2021-21660
XSS vulnerability in Jenkins Markdown Formatter Plugin
Impact
Jenkins Markdown Formatter Plugin 0.1.0 and earlier uses a Markdown library to parse Markdown that does not escape crafted link target URLs. This results in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with the ability to edit any description rendered using the configured markup formatter. Jenkins Markdown Formatter Plugin 0.2.0 uses a different Markdown library that is not affected by this problem.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| maven | io.jenkins.plugins:markdown-formatter | <= 0.1.0 | 0.2.0 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Jenkins | Markdown Formatter | through 0.1.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- 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
- https://github.com/advisories/GHSA-xqpp-26pp-2365
- https://nvd.nist.gov/vuln/detail/CVE-2021-21660
- https://github.com/jenkinsci/markdown-formatter-plugin/commit/6b283a5bba3424fd5174b92e7ad8724cdbdf596c