4.7

CVE-2026-73490: flavorjones loofah Cross-site Scripting

CVSS: 4.7v3.1MediumAwaiting analysis
AliasesUBUNTU-CVE-2026-73490DEBIAN-CVE-2026-73490CGA-3pm4-vcgg-22g7
Published 12-08-2026Last modified 13-08-2026
Open JSON

Vulnerability summary

CVE-2026-73490 is a medium (CVSS 4.7) Cross-site Scripting vulnerability in flavorjones loofah. EPSS estimates a 0.30% chance of exploitation in the next 30 days, higher than 21% of scored vulnerabilities.

Overall risk
19/100
0100
Low · default modelHow is this calculated?
CVSS score
4.7/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.30%
0%100%
Low · +0.12 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 4 · Related 5
OPENSUSE-SU-2026:12153-1OPENSUSE-SU-2026:22068-1SUSE-SU-2026:24195-1SUSE-SU-2026:24250-1CGA-XV77-WGMR-Q2QF

Timeline

  1. 12-08-2026
    PublishedVulnerability first disclosed.
  2. 13-08-2026
    Last modifiedVulnerability information updated.

Description

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 metrics

7 scores · 7 sources · 1 version

EPSS trend

Probability

0.30%

Chance of exploitation in the next 30 days

Percentile

21%

Versus all other CVEs

30-day change

+0.12 pp

From 0.18% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.30%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Chainguard37 products
  • commercial-gitlab-rails-ee-19.1All versions (No fix recorded)
  • commercial-gitlab-rails-ee-19.2< 19.2.7-r4
  • commercial-gitlab-rails-ee-fips-19.1All versions (No fix recorded)
  • commercial-gitlab-rails-ee-fips-19.2< 19.2.7-r4
  • gitlab-rails-ce-18.1All versions (No fix recorded)
Wolfi3 products
  • ruby3.2-rails-8.1< 8.1.3-r9
  • ruby3.4-rails-8.1< 8.1.3-r11
  • ruby4.0-rails-8.1< 8.1.3-r10
Debian1 product
  • ruby-loofahAll versions (No fix recorded) | < 2.25.2-1
Flavorjones1 product
RubyGems1 product
  • loofah< 2.25.2
Ubuntu1 product
  • ruby-loofahAll versions (No fix recorded)

6 vendors · 44 products

References

10 links