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Security Advisories

CVE-2026-33169

NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-33169

Severity

Unknown
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Summary

Rails Active Support has a possible ReDoS vulnerability in number_to_delimited

Description

Active Support is a toolkit of support libraries and Ruby core extensions extracted from the Rails framework. NumberToDelimitedConverter uses a lookahead-based regular expression with gsub! to insert thousands delimiters. Prior to versions 8.1.2.1, 8.0.4.1, and 7.2.3.1, the interaction between the repeated lookahead group and gsub! can produce quadratic time complexity on long digit strings. Versions 8.1.2.1, 8.0.4.1, and 7.2.3.1 contain a patch.

References

Affected packages


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