What’s Vulnerable › Vulnerabilities

CVE-2021-4250: cgriego active_attr Regex boolean_typecaster.rb call denial of service

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-12-18 · updated 2026-06-17
• Weakness: CWE-404

Description

A vulnerability classified as problematic has been found in cgriego active_attr up to 0.15.2. This affects the function call of the file lib/active_attr/typecasting/boolean_typecaster.rb of the component Regex Handler. The manipulation of the argument value leads to denial of service. The exploit has been disclosed to the public and may be used. Upgrading to version 0.15.3 is able to address this issue. The name of the patch is dab95e5843b01525444b82bd7b336ef1d79377df. It is recommended to upgrade the affected component. The associated identifier of this vulnerability is VDB-216207.

Affected products

• cgriego active_attr: before 0.15.3 — fixed in 0.15.3

How to fix

Upgrade to a fixed version: cgriego active_attr 0.15.3. Check the vendor advisory for mitigations.

References

• https://github.com/cgriego/active_attr/commit/dab95e5843b01525444b82bd7b336ef1d79377df
• https://github.com/cgriego/active_attr/issues/184
• https://github.com/cgriego/active_attr/pull/185
• https://github.com/cgriego/active_attr/releases/tag/v0.15.3
• https://vuldb.com/?id.216207
• https://github.com/cgriego/active_attr/commit/dab95e5843b01525444b82bd7b336ef1d79377df
• https://github.com/cgriego/active_attr/issues/184
• https://github.com/cgriego/active_attr/pull/185
• https://github.com/cgriego/active_attr/releases/tag/v0.15.3
• https://vuldb.com/?id.216207

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