CVE-2022-23519
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| rocky | 8 | fixed | |
| sles | affected | | |
| debian | bookworm | fixed | 1.4.4-1 |
| debian | bullseye | fixed | 1.3.0-1+deb11u1 |
| debian | forky | fixed | 1.4.4-1 |
| debian | sid | fixed | 1.4.4-1 |
| debian | trixie | fixed | 1.4.4-1 |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| RubyGems | rails-html-sanitizer | <>= 1.4.4 | >= 1.4.4 |
| RubyGems | rails-html-sanitizer | <1.4.4 | 1.4.4 |
References
- https://github.com/rails/rails-html-sanitizer/security/advisories/GHSA-9h9g-93gc-623h
- https://errata.rockylinux.org/RLSA-2023:2097
- https://www.suse.com/security/cve/CVE-2022-23519.html
- https://nvd.nist.gov/vuln/detail/CVE-2022-23519
- https://hackerone.com/reports/1656627
- https://github.com/rails/rails-html-sanitizer
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rails-html-sanitizer/CVE-2022-23519.yml
- https://lists.debian.org/debian-lts-announce/2023/09/msg00012.html
- https://lists.debian.org/debian-lts-announce/2024/09/msg00045.html
- https://security-tracker.debian.org/tracker/CVE-2022-23519
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.