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CVE-2025-58767

REXML has a DoS condition when parsing malformed XML file

Published: Sep 17, 2025Updated: Sep 30, 2025 Sources: CVE List NVD GHSACWE-400
NVD MITRE
5.3CVSSMEDIUM
EPSS Score
0.2%
Top 86.3%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
Patch Available

Description

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:L
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:LAvailability
Low
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Weaknesses

CWE-400

Affected Products

rexmlruby-lang
Library
OSS Libraries / generic-library
rexmlruby
Library
OSS Libraries / rubygems
rexmlRubyGemsOSS Libraries
ruby-langoss-projectOSS Librariesaka ruby, rexml
rubyoss-projectJPOSS Libraries
rubygemspackage-ecosystemOSS Libraries

Attack Graph

Products CVE Techniques Tactics

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Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

https://github.com/ruby/rexml/commit/5859bdeac792687eaf93d8e8f0b7e3c1e2ed5c23
github.com
https://github.com/ruby/rexml/security/advisories/GHSA-c2f4-jgmc-q2r5
github.com
https://nvd.nist.gov/vuln/detail/CVE-2025-58767
nvd.nist.gov
and 3 more references View all →

Timeline

Published
Sep 17, 2025
Last Updated
Sep 30, 2025

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