Vulnerability DatabaseCVE-2025-58767
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CVE-2025-58767
September 17, 2025
REXML is an XML toolkit for Ruby. The REXML gems from 3.3.3 to 3.4.1 has a DoS vulnerability when parsing XML containing multiple XML declarations. If you need to parse untrusted XMLs, you may be impacted to these vulnerabilities. The REXML gem 3.4.2 or later include the patches to fix these vulnerabilities.
Affected Packages
https://github.com/ruby/rexml.git (GITHUB):
Affected version(s) >=v3.3.3 <v3.4.2
Fix Suggestion:
Update to version v3.4.2
rexml (RUBY):
Affected version(s) >=3.3.3 <3.4.2
Fix Suggestion:
Update to version 3.4.2
Related Resources (7)
https://www.ruby-lang.org/en/news/2025/09/18/dos-rexml-cve-2025-58767
https://github.com/ruby/rexml/security/advisories/GHSA-c2f4-jgmc-q2r5
https://nvd.nist.gov/vuln/detail/CVE-2025-58767
https://security-tracker.debian.org/tracker/CVE-2025-58767
https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rexml/CVE-2025-58767.yml
https://github.com/ruby/rexml
https://github.com/ruby/rexml/commit/5859bdeac792687eaf93d8e8f0b7e3c1e2ed5c23
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CVSS v4
Base Score:
1.2
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
Exploit Maturity
UNREPORTED
CVSS v3
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Weakness Type (CWE)
Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')
CWE-776
Uncontrolled Resource Consumption
CWE-400
EPSS
Base Score:
0.01