REXML ReDoS vulnerability
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.6epss 1.4%
exploitation probability
1.4%top 30% of all CVEs
observed exploitation
nono source reports it
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.
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
Affected products
ruby · rexmlReferences
https://github.com/ruby/rexml/commit/ce59f2eb1aeb371fe1643414f06618dbe031979fhttps://github.com/ruby/rexml/security/advisories/GHSA-2rxp-v6pw-ch6mhttps://lists.debian.org/debian-lts-announce/2025/01/msg00011.htmlhttps://security.netapp.com/advisory/ntap-20241227-0004/https://www.ruby-lang.org/en/news/2024/10/28/redos-rexml-cve-2024-49761