CVE-2026-61824
Defuddle vulnerable to XSS via unescaped attribute interpolation in site extractors
Impact
Defuddle cleans up HTML pages. Prior to 0.19.1, site extractors interpolate page-derived image alt and src values, og:image values, and video descriptions into HTML strings without context-appropriate escaping, and buildExtractorResponse() returns this contentHtml without the main pipeline's DOM-based sanitization. The affected paths include src/extractors/x-article.ts, src/extractors/substack.ts, and src/extractors/youtube.ts. A malicious page or attacker-controlled content on a matching domain can inject event-handler attributes or javascript URLs that execute when a victim or downstream application renders the extracted HTML. This issue is fixed in version 0.19.1.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | defuddle | <= 0.19.0 | 0.19.1 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-jg4p-g6xj-4qmf
- https://github.com/kepano/defuddle/security/advisories/GHSA-jg4p-g6xj-4qmf
- https://github.com/kepano/defuddle/pull/326
- https://github.com/kepano/defuddle/commit/baf2eaef61d334ef595b28c89e5c5e89e52daf7f
- https://github.com/kepano/defuddle/releases/tag/0.19.1