Rexml: rexml: denial of service via inefficient regex parsing
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 0.5%
exploitation probability
0.5%top 60% of all CVEs
observed exploitation
nono source reports it
A flaw was found in REXML. A remote attacker could exploit inefficient regular expression (regex) parsing when processing hex numeric character references (&#x...;) in XML documents. This could lead to a Regular Expression Denial of Service (ReDoS), impacting the availability of the affected component. This issue is the result of an incomplete fix for CVE-2024-49761.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
Red Hat SatelliteRed Hat · Red Hat Satellite 6.16 for RHEL 8Red Hat · Red Hat Satellite 6.16 for RHEL 9Red Hat · Red Hat Satellite 6.17 for RHEL 9Red Hat · Satellite Client 6 for RHEL 8Red Hat · Satellite Client 6 for RHEL 9References
https://access.redhat.com/errata/RHSA-2025:17606https://access.redhat.com/errata/RHSA-2025:17613https://access.redhat.com/errata/RHSA-2025:17693https://access.redhat.com/security/cve/CVE-2025-10990https://bugzilla.redhat.com/show_bug.cgi?id=2398216https://github.com/ruby/rexml/commit/ce59f2eb1aeb371fe1643414f06618dbe031979fhttps://github.com/ruby/rexml/security/advisories/GHSA-2rxp-v6pw-ch6mhttps://www.ruby-lang.org/en/news/2024/10/28/redos-rexml-cve-2024-49761/