Description (CNA)
justhtml versions before 1.13.0 contain a cross-site scripting vulnerability in the to_markdown() function when serializing attacker-controlled pre content. Attackers can place backticks inside sanitized pre elements to break out of fixed-length code fences, allowing raw HTML to execute when the generated Markdown is rendered by CommonMark or GFM-style renderers.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| EmilStenstrom / justhtml | affected 0 before 1.13.0; unaffected 1.13.0 |
CWE
CWE-80
References
- https://github.com/EmilStenstrom/justhtml/security/advisories/GHSA-5vp3-3cg6-2rq3
- https://www.vulncheck.com/advisories/justhtml-before-xss-via-code-fence-breakout
ADP enrichment
No English description supplied.