AUGUST 4, 2026
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Case File

CVE-2021-22904

HIGH · CVSS 7.5 EPSS 4.81%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-06-11 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.5. It may lead to a denial-of-service condition.

CVE
CVE-2021-22904
Severity
HIGH
CVSS
7.5
EPSS
4.81%

Original NVD Description

The actionpack ruby gem before 6.1.3.2, 6.0.3.7, 5.2.4.6, 5.2.6 suffers from a possible denial of service vulnerability in the Token Authentication logic in Action Controller due to a too permissive regular expression. Impacted code uses `authenticate_or_request_with_http_token` or `authenticate_with_http_token` for request authentication.

Related CVEs

Other vulnerabilities affecting the same vendor(s)