CVE-2022-23519

Public Exploit
Possible XSS vulnerability with certain configurations of rails-html-sanitizer

Description

rails-html-sanitizer is responsible for sanitizing HTML fragments in Rails applications. Prior to version 1.4.4, a possible XSS vulnerability with certain configurations of Rails::Html::Sanitizer may allow an attacker to inject content if the application developer has overridden the sanitizer's allowed tags in either of the following ways: allow both "math" and "style" elements, or allow both "svg" and "style" elements. Code is only impacted if allowed tags are being overridden. . This issue is fixed in version 1.4.4. All users overriding the allowed tags to include "math" or "svg" and "style" should either upgrade or use the following workaround immediately: Remove "style" from the overridden allowed tags, or remove "math" and "svg" from the overridden allowed tags.

Category

7.2
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.14%
Third-Party Advisory github.com Third-Party Advisory hackerone.com Third-Party Advisory debian.org
Affected: rails rails-html-sanitizer
Published at:
Updated at:

References

Link Tags
https://github.com/rails/rails-html-sanitizer/security/advisories/GHSA-9h9g-93gc-623h third party advisory exploit
https://hackerone.com/reports/1656627 third party advisory exploit
https://lists.debian.org/debian-lts-announce/2023/09/msg00012.html third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2022-23519?
CVE-2022-23519 has been scored as a high severity vulnerability.
How to fix CVE-2022-23519?
To fix CVE-2022-23519, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-23519 being actively exploited in the wild?
It is possible that CVE-2022-23519 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-23519?
CVE-2022-23519 affects rails rails-html-sanitizer.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.