Medium 4.7Published Aug 12, 2026

CVE-2026-73490Loofah: SVG `href` attribute bypasses local-reference restriction

Updated under an hour ago (2026-10-19 07:23 UTC)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for flavorjones loofah

Exploited in the last 30 days

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.

CVSS: 4.7 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness (CWE): CWE-79
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Awaiting Analysis
Record last updated: Aug 13, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

flavorjones loofah flavorjones:loofah (from the name)	before 2.25.2	CNA record

References

https://github.com/flavorjones/loofah/security/advisories/GHSA-9wjq-cp2p-hrgfx-refsource-confirm
https://github.com/flavorjones/loofah/pull/308x-refsource-misc
https://github.com/flavorjones/loofah/commit/20867b9be689521887364b74822c41ef830523c9x-refsource-misc
https://github.com/flavorjones/loofah/releases/tag/v2.25.2x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.