CVE-2026-33176
Active Support is a toolkit of support libraries and Ruby core extensions extracted from the Rails framework. Prior to v
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.
HIGH · CVSS 7.5
EPSS 0.00032
Schedule remediation
- SSVC automatable: yes - attacks can be scripted at scale
- CVSS base score ≥ 7.0
Sigma rules1
YARA rules0