CVE-2022-23518

Public Exploit
Improper neutralization of data URIs allows XSS in rails-html-sanitizer

Description

rails-html-sanitizer is responsible for sanitizing HTML fragments in Rails applications. Versions >= 1.0.3, < 1.4.4 are vulnerable to cross-site scripting via data URIs when used in combination with Loofah >= 2.1.0. This issue is patched in version 1.4.4.

Category

6.1
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 3.0 •
EPSS 0.21%
Third-Party Advisory github.com 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-mcvf-2q2m-x72m third party advisory
https://github.com/rails/rails-html-sanitizer/issues/135 third party advisory issue tracking exploit
https://hackerone.com/reports/1694173 third party advisory permissions required
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-2022-23518?
CVE-2022-23518 has been scored as a medium severity vulnerability.
How to fix CVE-2022-23518?
To fix CVE-2022-23518, 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-2022-23518 being actively exploited in the wild?
It is possible that CVE-2022-23518 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-2022-23518?
CVE-2022-23518 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.