REXML contains a denial of service vulnerability

Impact

The REXML gem before 3.2.6 has a DoS vulnerability when it parses an XML that has many <s in an attribute value.

If you need to parse untrusted XMLs, you many be impacted to this vulnerability.

Patches

The REXML gem 3.2.7 or later include the patch to fix this vulnerability.

Workarounds

Don’t parse untrusted XMLs.

References

• https://www.ruby-lang.org/en/news/2024/05/16/dos-rexml-cve-2024-35176/