ruby/rexml · Security
REXML has DoS condition when parsing malformed XML file
- GHSA ID
- GHSA-c2f4-jgmc-q2r5
- CVE ID
- CVE-2025-58767
- Severity
- low
- Published
- Updated
- CVSS v4
- 1.2 · CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U
Description
Impact
The REXML gems from 3.3.3 to 3.4.1 have a DoS vulnerability when parsing XML containing multiple XML declarations. If you need to parse untrusted XMLs, you may be impacted to these vulnerabilities.
Patches
REXML gems 3.4.2 or later include the patches to fix these vulnerabilities.
Workarounds
Don't parse untrusted XMLs.
References
- https://www.ruby-lang.org/en/news/2025/09/18/dos-rexml-cve-2025-58767/ : An announcement on www.ruby-lang.org
CWEs
- CWE-400 · Uncontrolled Resource Consumption
- CWE-776 · Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')
References
- https://github.com/ruby/rexml/security/advisories/GHSA-c2f4-jgmc-q2r5 ↗
- https://github.com/ruby/rexml/commit/5859bdeac792687eaf93d8e8f0b7e3c1e2ed5c23 ↗
- https://www.ruby-lang.org/en/news/2025/09/18/dos-rexml-cve-2025-58767 ↗
- https://nvd.nist.gov/vuln/detail/CVE-2025-58767 ↗
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rexml/CVE-2025-58767.yml ↗
- https://github.com/advisories/GHSA-c2f4-jgmc-q2r5 ↗