๐Ÿ›ก๏ธ CVE-2026-33169
๐ŸŸก CVSS 5.3 โ€” Medium โœ… No Known Exploit CWE-1333 NVD
5.3
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

Details

Severity Medium
CVSS Score 5.3
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CWE CWE-1333
Public Exploit โœ… No
Source NVD
Published 2026-03-23
Updated 2026-06-15
Modified 2026-05-13

Affected Packages

Software From version Fixed in
activesupport โ€” 7.2.3.1
rails 8.1.0 8.1.2.1

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