CVE-2021-4250

Name: CVE-2021-4250
Creator: NVD / NIST
Published: 2022-12-18T22:15:10.08+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.11%

Last modified Jun 17, 2026

CVE-2021-4250 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 1.11% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

1.11%

61.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-404

Affected Software

Vendor	Product	Versions
Active Attr Project	Active Attr	< 0.15.3

References

https://github.com/cgriego/active_attr/commit/dab95e5843b01525444b82bd7b336ef1d79377dfPatch, Third Party Advisory
https://github.com/cgriego/active_attr/issues/184Exploit, Issue Tracking, Patch, Third Party Advisory
https://github.com/cgriego/active_attr/pull/185Patch, Third Party Advisory
https://github.com/cgriego/active_attr/releases/tag/v0.15.3Release Notes, Third Party Advisory
https://vuldb.com/?id.216207Third Party Advisory
https://github.com/cgriego/active_attr/commit/dab95e5843b01525444b82bd7b336ef1d79377dfPatch, Third Party Advisory
https://github.com/cgriego/active_attr/issues/184Exploit, Issue Tracking, Patch, Third Party Advisory
https://github.com/cgriego/active_attr/pull/185Patch, Third Party Advisory
https://github.com/cgriego/active_attr/releases/tag/v0.15.3Release Notes, Third Party Advisory
https://vuldb.com/?id.216207Third Party Advisory

Timeline

Published: Dec 18, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-4250?

How severe is CVE-2021-4250?

CVE-2021-4250 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.11% probability of exploitation in the next 30 days.

How do I fix CVE-2021-4250?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-4250?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST