CVE-2024-49761
REXML ReDoS vulnerability
- State
- Published
- Severity
- 6.6 Medium
- Published
- Oct 28, 2024
- Updated
- Nov 3, 2025
- Reserved
- Oct 18, 2024
Description
REXML is an XML toolkit for Ruby. The REXML gem before 3.3.9 has a ReDoS vulnerability when it parses an XML that has many digits between &# and x...; in a hex numeric character reference (&#x...;). This does not happen with Ruby 3.2 or later. Ruby 3.1 is the only affected maintained Ruby. The REXML gem 3.3.9 or later include the patch to fix the vulnerability.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.6 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U | GitHub_M |
Weaknesses
- CWE-1333 Inefficient Regular Expression Complexity
Affected Products
| Product | Versions |
|---|---|
rexmlruby |
|
References
- https://github.com/ruby/rexml/security/advisories/GHSA-2rxp-v6pw-ch6m
- https://github.com/ruby/rexml/commit/ce59f2eb1aeb371fe1643414f06618dbe031979f
- https://www.ruby-lang.org/en/news/2024/10/28/redos-rexml-cve-2024-49761
- https://security.netapp.com/advisory/ntap-20241227-0004/
- https://lists.debian.org/debian-lts-announce/2025/01/msg00011.html
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