REXML ReDoS vulnerability
GHSA-2rxp-v6pw-ch6m · CVE-2024-49761 · CVE-2025-10990
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Description
Impact
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. Note that Ruby 3.1 will reach EOL on 2025-03.
Patches
The REXML gem 3.3.9 or later include the patch to fix the vulnerability.
Workarounds
Use Ruby 3.2 or later instead of Ruby 3.1.
References
References
- WEB https://github.com/ruby/rexml/security/advisories/GHSA-2rxp-v6pw-ch6m
- ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2024-49761
- WEB https://github.com/ruby/rexml/commit/ce59f2eb1aeb371fe1643414f06618dbe031979f
- PACKAGE https://github.com/ruby/rexml
- WEB https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rexml/CVE-2024-49761.yml
- WEB https://lists.debian.org/debian-lts-announce/2025/01/msg00011.html
- WEB https://security.netapp.com/advisory/ntap-20241227-0004
- WEB https://www.ruby-lang.org/en/news/2024/10/28/redos-rexml-cve-2024-49761
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