Rexml: rexml: denial of service via inefficient regex parsing
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.
02 / AFFECTED SOFTWARE
Affected packages
21 explicit affected versions
04 / EVIDENCE
Source records
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.
05 / REFERENCES
Further evidence
- https://access.redhat.com/downloads/content/package-browser/
- https://access.redhat.com/errata/RHSA-2025:17606
- https://access.redhat.com/errata/RHSA-2025:17613
- https://access.redhat.com/errata/RHSA-2025:17693
- https://access.redhat.com/security/cve/CVE-2025-10990
- https://bugzilla.redhat.com/show_bug.cgi?id=2398216
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/10xxx/CVE-2025-10990.json
- https://github.com/ruby/rexml/commit/ce59f2eb1aeb371fe1643414f06618dbe031979f
- https://github.com/ruby/rexml/security/advisories/GHSA-2rxp-v6pw-ch6m
- https://nvd.nist.gov/vuln/detail/CVE-2025-10990
- https://www.redhat.com/en/technologies/management/satellite
- https://www.ruby-lang.org/en/news/2024/10/28/redos-rexml-cve-2024-49761/