CVE-2026-73492

Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on top of Nokogiri. From 2.25.0 until 2.25.2, Loofah::HTML5::Scrub.allowed_uri? does not reject javascript: or vbscript: URIs whose scheme is split by semicolon-less numeric character references such as &#58, &#9, &#10, or &#13. CGI.unescapeHTML leaves these references encoded, so allowed_uri? reports the URL safe even though a browser decodes an encoded colon or strips encoded whitespace and executes the resulting URI scheme. This issue affects only callers that pass HTML-encoded strings directly to allowed_uri?; Loofah's default sanitize() path is not affected. This issue is fixed in version 2.25.2.

CVSS

No CVSS.

References

Link	Resource
https://github.com/flavorjones/loofah/commit/f1be9d893b5a8dd79240441a912d8897e74c38c0
https://github.com/flavorjones/loofah/pull/308
https://github.com/flavorjones/loofah/releases/tag/v2.25.2
https://github.com/flavorjones/loofah/security/advisories/GHSA-5qhf-9phg-95m2

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-12 22:17

Updated : 2026-09-09 20:58

NVD link : CVE-2026-73492

Mitre link : CVE-2026-73492

CVE.ORG link : CVE-2026-73492

JSON object : View

Products Affected

No product.

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CWE-184

Incomplete List of Disallowed Inputs

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