CVE-2026-33169 (GCVE-0-2026-33169)
Vulnerability from cvelistv5
Published
2026-03-23 23:07
Modified
2026-03-24 15:46
Severity ?
6.9 (Medium) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
CWE
  • CWE-400 - Uncontrolled Resource Consumption
  • CWE-1333 - Inefficient Regular Expression Complexity
Summary
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
Impacted products
Vendor Product Version
rails activesupport Version: >= 8.1.0.beta1, < 8.1.2.1
Version: >= 8.0.0.beta1, < 8.0.4.1
Version: < 7.2.3.1
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