CVE-2026-73490Medium· 4.7▾ Sunlit

Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on top of Nokogiri

▾ Sunlit zone — Low / medium · no exploitation signal

Depth score26/ 100 · Low

impact 25.9 · likelihood 0 · exploitation 0

⚡ Agent-ready:Raw markdown ↗JSON ↗

Proof of concept

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Published

Aug 12, 2026

Updated

Sep 9, 2026

CVSS

4.7

Vendor

—

Product

—

CWE

CWE-79

Depth score

26 · Low

EPSS

0.18% · p8

Platforms

—

Source

NVD

Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS history

Exploit-prediction probability, daily snapshots since Sep 9.

0.2% → 0.2%

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

3 events · 28 days

Aug 12, 2026Published
Disclosed via NVD
Sep 9, 2026Record revised
Last analysed / modified upstream
Sep 9, 2026EPSS first tracked
0.2%

CWE-79 #nvd

Full technical detail▾

Overview

Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on top of Nokogiri. Prior to 2.25.2, Loofah's HTML5 sanitizer applies its local-reference restriction only to the xlink:href attribute on SVG use and feImage elements, while browsers also accept the plain href attribute. A crafted sanitized SVG can therefore reference an arbitrary same-origin external document; use may render external SVG content containing scripts or other dangerous content, and feImage may load external images for tracking. Applications that sanitize user-supplied SVG with Loofah's default allowlist are affected. This issue is fixed in version 2.25.2.

Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

References

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#nvd

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