Description

REXML is an XML toolkit for Ruby. The REXML gem before 3.3.1 has some DoS vulnerabilities when it parses an XML that has many specific characters such as `<`, `0` and `%>`. If you need to parse untrusted XMLs, you many be impacted to these vulnerabilities. The REXML gem 3.3.2 or later include the patches to fix these vulnerabilities. Users are advised to upgrade. Users unable to upgrade should avoid parsing untrusted XML strings.

Classification

CVE ID: CVE-2024-39908

CVSS Base Severity: MEDIUM

CVSS Base Score: 4.3

Affected Products

Vendor: ruby

Product: rexml

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.04% (probability of being exploited)

EPSS Percentile: 11.66% (scored less or equal to compared to others)

EPSS Date: 2025-02-15 (when was this score calculated)

References

https://github.com/ruby/rexml/security/advisories/GHSA-4xqq-m2hx-25v8
https://www.ruby-lang.org/en/news/2024/07/16/dos-rexml-cve-2024-39908

Timeline