Your submission was sent successfully! Close


Published: 16 June 2020

In Sanitize (RubyGem sanitize) greater than or equal to 3.0.0 and less than 5.2.1, there is a cross-site scripting vulnerability. When HTML is sanitized using Sanitize's "relaxed" config, or a custom config that allows certain elements, some content in a math or svg element may not be sanitized correctly even if math and svg are not in the allowlist. You are likely to be vulnerable to this issue if you use Sanitize's relaxed config or a custom config that allows one or more of the following HTML elements: iframe, math, noembed, noframes, noscript, plaintext, script, style, svg, xmp. Using carefully crafted input, an attacker may be able to sneak arbitrary HTML through Sanitize, potentially resulting in XSS (cross-site scripting) or other undesired behavior when that HTML is rendered in a browser. This has been fixed in 5.2.1.



CVSS 3 base score: 7.3


Package Release Status
Launchpad, Ubuntu, Debian
bionic Needs triage

eoan Ignored
(reached end-of-life)
Released (4.6.6-2.1~
groovy Not vulnerable
hirsute Not vulnerable
impish Not vulnerable
jammy Not vulnerable
precise Does not exist

trusty Does not exist

upstream Needs triage

xenial Ignored
(end of standard support, was needs-triage)