En bref
- CVE-2026-33176 est une vulnérabilité ÉLEVÉE (CVSS 7.5) touchant activesupport, rails (rubyonrails).
- Probabilité d'exploitation dans les 30 prochains jours (EPSS) : 0.86%, plus élevée que 58.5% des vulnérabilités.
- Correctif : mettre à jour vers 8.0.4.1, 8.1.2.1, 7.2.3.1 ou plus récent.
| Package | Affected versions | Patched versions |
|---|
| activesupport RubyGems | ≥ 8.0.0.beta1, < 8.0.4.1≥ 8.1.0.beta1, < 8.1.2.1< 7.2.3.1
| 8.0.4.18.1.2.17.2.3.1
|
| rails | ≥ 8.0.0, < 8.0.4.1≥ 8.1.0, < 8.1.2.1< 7.2.3.1
| 8.0.4.18.1.2.17.2.3.1
|
Description
Impact
Active Support number helpers accept strings containing scientific notation (e.g. 1e10000), which when converted to a string could be expanded into extremely large decimal representations. This can cause excessive memory allocation and CPU consumption when the expanded number is formatted, possibly resulting in a DoS vulnerability.
Releases
The fixed releases are available at the normal locations.
Credit
This issue was responsibly reported by Hackerone researcher manun.
NVD description
Active Support is a toolkit of support libraries and Ruby core extensions extracted from the Rails framework. Prior to versions 8.1.2.1, 8.0.4.1, and 7.2.3.1, Active Support number helpers accept strings containing scientific notation (e.g. `1e10000`), which `BigDecimal` expands into extremely large decimal representations. This can cause excessive memory allocation and CPU consumption when the expanded number is formatted, possibly resulting in a DoS vulnerability. Versions 8.1.2.1, 8.0.4.1, and 7.2.3.1 contain a patch.
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