FKIE_CVE-2026-33169
Vulnerability from fkie_nvd - Published: 2026-03-24 00:16 - Updated: 2026-03-24 18:01
Severity ?
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 | |
|---|---|---|---|
| rubyonrails | rails | * | |
| rubyonrails | rails | * | |
| rubyonrails | rails | * |
{
"configurations": [
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"nodes": [
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"value": "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."
},
{
"lang": "es",
"value": "Active Support es un conjunto de herramientas de bibliotecas de soporte y extensiones del n\u00facleo de Ruby extra\u00eddas del framework Rails. \u0027NumberToDelimitedConverter\u0027 utiliza una expresi\u00f3n regular basada en lookahead con \u0027gsub!\u0027 para insertar delimitadores de millares. Antes de las versiones 8.1.2.1, 8.0.4.1 y 7.2.3.1, la interacci\u00f3n entre el grupo lookahead repetido y \u0027gsub!\u0027 puede producir una complejidad de tiempo cuadr\u00e1tica en cadenas de d\u00edgitos largas. Las versiones 8.1.2.1, 8.0.4.1 y 7.2.3.1 contienen un parche."
}
],
"id": "CVE-2026-33169",
"lastModified": "2026-03-24T18:01:08.873",
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"Recovery": "NOT_DEFINED",
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"exploitMaturity": "NOT_DEFINED",
"integrityRequirement": "NOT_DEFINED",
"modifiedAttackComplexity": "NOT_DEFINED",
"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
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"modifiedSubAvailabilityImpact": "NOT_DEFINED",
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"published": "2026-03-24T00:16:28.113",
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"tags": [
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"lang": "en",
"value": "CWE-400"
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"lang": "en",
"value": "CWE-1333"
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],
"source": "security-advisories@github.com",
"type": "Primary"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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