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TI-2021-03108 Aliases CVE-2021-4250GHSA-4whf-rmx5-8frv

cgriego active_attr Regex boolean_typecaster.rb call denial of service

Priority LOW 35CWE-404Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-404.

Summary

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.

Why it matters now

EPSS 0.0118 67th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
Fix Fixed active_attr (RubyGems): 0.15.4

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
cgriegoactive_attr0.15.0; 0.15.1; 0.15.2—No fix listedCNA
—active_attr (RubyGems)before 0.15.40.15.4Patch availableGHSA-4whf-rmx5-8frv
  • active_attr Vendorcgriego Affected 0.15.0; 0.15.1; 0.15.2 Fixed in — No fix listed CNA
  • active_attr (RubyGems) Vendor— Affected before 0.15.4 Fixed in 0.15.4 Patch available GHSA-4whf-rmx5-8frv

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:active_attr_project:active_attr:*:*:*:*:*:*:*:*before 0.15.3VulnerableActive Attr Project
  • cpe:2.3:a:active_attr_project:active_attr:*:*:*:*:*:*:*:* Versions before 0.15.3 Vulnerable ·Active Attr Project

Remediation

  • Fix · GHSA-4whf-rmx5-8frv active_attr (RubyGems) Fixed in 0.15.4 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-4250
  2. 2026-10-03 Alias added: GHSA-4whf-rmx5-8frv

References

Exploit 1

Patch 2

Advisory 2

Other 3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences