CVE-2024-49761
HIGH7.5EPSS 1.6%REXML ReDoS vulnerability
Published: 10/28/2024Modified: 12/3/2025
Description
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.
Affected packages (5)
- Alpine/ruby-rexmlfrom 0, < 3.3.9-r0
- Debian/ruby2.7from 0, < 2.7.4-1+deb11u3
- Debian/ruby3.1from 0
- Debian/ruby3.3from 0, < 3.3.6-1
- RubyGems/rexmlfrom 0, < 3.3.9
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | 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 |
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
References (10)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2024-49761
- ADVISORYhttps://security.alpinelinux.org/vuln/CVE-2024-49761
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2024-49761
- PATCHhttps://github.com/ruby/rexml
- WEBhttps://github.com/ruby/rexml/commit/ce59f2eb1aeb371fe1643414f06618dbe031979f
- WEBhttps://github.com/ruby/rexml/security/advisories/GHSA-2rxp-v6pw-ch6m
- WEBhttps://github.com/rubysec/ruby-advisory-db/blob/master/gems/rexml/CVE-2024-49761.yml
- WEBhttps://lists.debian.org/debian-lts-announce/2025/01/msg00011.html
- WEBhttps://security.netapp.com/advisory/ntap-20241227-0004
- WEBhttps://www.ruby-lang.org/en/news/2024/10/28/redos-rexml-cve-2024-49761