cbcvebase.
CVE-2020-4054
published 2020-06-16

CVE-2020-4054: 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…

PriorityP338high7.3CVSS 3.1
AVNACLPRNUINSUCLILAL
EPSS
1.85%
77.1th percentile
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.

Affected

4 ranges
VendorProductVersion rangeFixed in
debianruby-sanitize< ruby-sanitize 4.6.6-2.1 (bookworm)ruby-sanitize 4.6.6-2.1 (bookworm)
rgrovesanitize
sanitize_projectsanitize>= 3.0.0 < 5.2.15.2.1
sanitize_projectsanitize>= 3.0.0 < 5.2.15.2.1

CVSS provenance

nvdv3.17.3HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
nvdv2.06.8MEDIUMAV:N/AC:M/Au:N/C:P/I:P/A:P
osv7.3HIGH
vendor_debian7.3HIGH
vendor_ubuntu7.3HIGH
Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.