Vulnerability Description
Defuddle cleans up HTML pages. Prior to version 0.9.0, the _findContentBySchemaText method in src/defuddle.ts interpolates image src and alt attributes directly into an HTML string without escaping. An attacker can use a " in the alt attribute to break out of the attribute context and inject event handler. This issue has been patched in version 0.9.0.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Kepano | Defuddle | < 0.9.0 |
Related Weaknesses (CWE)
References
- https://github.com/kepano/defuddle/commit/f154cb740ee603431b69638273af737a27156dPatch
- https://github.com/kepano/defuddle/security/advisories/GHSA-5mq8-78gm-pjmqExploitMitigationVendor Advisory
FAQ
What is CVE-2026-30830?
CVE-2026-30830 is a vulnerability with a CVSS score of 6.1 (MEDIUM). Defuddle cleans up HTML pages. Prior to version 0.9.0, the _findContentBySchemaText method in src/defuddle.ts interpolates image src and alt attributes directly into an HTML string without escaping. A...
How severe is CVE-2026-30830?
CVE-2026-30830 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-30830?
Check the references section above for vendor advisories and patch information. Affected products include: Kepano Defuddle.