Vulnerability in Rails Rails-Html-Sanitizer

CVE-2022-23517

rails-html-sanitizer is responsible for sanitizing HTML fragments in Rails applications. Certain configurations of rails-html-sanitizer < 1.4.4 use an inefficient regular expression that is susceptible to excessive backtracking when attempting to sanitize certain SVG attributes. This may lead to a denial of service through CPU resource consumption. This issue has been patched in version 1.4.4.

Vulnerability class: ReDoS (Regular Expression Denial of Service)

EPSS: 0.015 (70.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2022-23517?
CVE-2022-23517 is a high-severity vulnerability in Rails Rails-Html-Sanitizer, classified under Inefficient Regular Expression Complexity. CVSS score: 7.5/10. Published 2022-12-14.
How severe is CVE-2022-23517?
High severity. CVSS v3 base score is 7.5 out of 10.