CVE-2026-61824

Defuddle: XSS via unescaped attribute interpolation in site extractors

State
Published
Severity
8.2 High
Published
Aug 21, 2026
Updated
Aug 24, 2026
Reserved
Jul 10, 2026

Read the record on cve.org

Description

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.

Scores

CVSSScoreVectorSource
3.18.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:NGitHub_M

Weaknesses

  • CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
  • CWE-116 Improper Encoding or Escaping of Output

Affected Products

ProductVersions
defuddlekepano
  • < 0.19.1Affected

References

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