CVE-2022-23518

Name: CVE-2022-23518
Creator: NVD / NIST
Published: 2022-12-14T17:15:10.713+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.87%

Last modified Jun 17, 2026

CVE-2022-23518 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. 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. EPSS estimates a 0.87% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

6.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

0.87%

54.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Rubyonrails	Rails Html Sanitizers	>= 1.0.3, < 1.4.4
Debian	Debian Linux	10.0
Loofah Project	Loofah	>= 2.1.0, < 2.19.1

References

https://github.com/rails/rails-html-sanitizer/issues/135Exploit, Issue Tracking, Third Party Advisory
https://github.com/rails/rails-html-sanitizer/security/advisories/GHSA-mcvf-2q2m-x72mThird Party Advisory
https://hackerone.com/reports/1694173Permissions Required, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/09/msg00012.htmlMailing List, Third Party Advisory
https://github.com/rails/rails-html-sanitizer/issues/135Exploit, Issue Tracking, Third Party Advisory
https://github.com/rails/rails-html-sanitizer/security/advisories/GHSA-mcvf-2q2m-x72mThird Party Advisory
https://hackerone.com/reports/1694173Permissions Required, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/09/msg00012.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2024/09/msg00045.html

Timeline

Published: Dec 14, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-23518?

How severe is CVE-2022-23518?

CVE-2022-23518 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.87% probability of exploitation in the next 30 days.

How do I fix CVE-2022-23518?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-23518?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST