wid-sec-w-2026-0833
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Published 2026-03-23
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View on BSI CERT-Bund ↗
Ruby on Rails: Multiple Vulnerabilities
CVSS 8.0
HIGH
Risk 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.
Affected Vendors
Open Source
Affected Products (6)
Open Source
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Ruby on Rails
<7.2.3.1
Open Source
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Ruby on Rails
7.2.3.1
Open Source
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Ruby on Rails
<8.0.4.1
Open Source
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Ruby on Rails
8.0.4.1
Open Source
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Ruby on Rails
<8.1.2.1
Open Source
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Ruby on Rails
8.1.2.1
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