Defuddle vulnerable to XSS via unescaped attribute interpolation in site extractors
GHSA-jg4p-g6xj-4qmf · CVE-2026-61824
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Description
Summary
An Improper Neutralization of Input During Web Page Generation issue in the site extractor component allows an attacker-controlled attribute value to be injected into output HTML without escaping. An attacker who crafts a malicious HTML page or controls content on a matching domain can execute arbitrary scripts when a victim processes the page, resulting in Cross-Site Scripting (XSS). This affects defuddle through 0.19.0 and has been patched in version 0.19.1.
Impact
This vulnerability allows for Cross-Site Scripting (XSS) execution without needing to compromise external websites. Affected consumers include:
- Obsidian Web Clipper,
- web services serving the parsed output directly as HTML, and
- any downstream application rendering the unsanitized HTML results
Patch
This issue has been patched in defuddle version 0.19.1. Users are encouraged to update to the latest release.
References
- WEB https://github.com/kepano/defuddle/security/advisories/GHSA-jg4p-g6xj-4qmf
- WEB https://github.com/kepano/defuddle/pull/326
- WEB https://github.com/kepano/defuddle/commit/baf2eaef61d334ef595b28c89e5c5e89e52daf7f
- PACKAGE https://github.com/kepano/defuddle
- WEB https://github.com/kepano/defuddle/releases/tag/0.19.1
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