VDB
CISA-2026-33169
CISA-2026-33169
PUBLISHED
CVSS 6.9 MEDIUM
Reported by GitHub_M · Published March 23, 2026
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.
Risk Scores
CVSS 4.0
6.9
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
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| rails | activesupport | >= 8.1.0.beta1, < 8.1.2.1, >= 8.0.0.beta1, < 8.0.4.1, < 7.2.3.1 |
| rails | activesupport | >= 8.1.0.beta1, < 8.1.2.1, >= 8.0.0.beta1, < 8.0.4.1, < 7.2.3.1 |
Timeline
- Mar 23, 2026 CVE Published
- Mar 24, 2026 CVE Updated
References
- https://github.com/rails/rails/security/advisories/GHSA-cg4j-q9v8-6v38 x_refsource_CONFIRM
- https://github.com/rails/rails/commit/29154f1097da13d48fdb3200760b3e3da66dcb11 x_refsource_MISC
- https://github.com/rails/rails/commit/b54a4b373c6f042cab6ee2033246b1c9ecc38974 x_refsource_MISC
- https://github.com/rails/rails/commit/ec1a0e215efd27a3b3911aae6df978a80f456a49 x_refsource_MISC
- https://github.com/rails/rails/releases/tag/v7.2.3.1 x_refsource_MISC
- https://github.com/rails/rails/releases/tag/v8.0.4.1 x_refsource_MISC
- https://github.com/rails/rails/releases/tag/v8.1.2.1 x_refsource_MISC