AUGUST 4, 2026
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Case File

CVE-2021-22902

HIGH · CVSS 7.5 EPSS 2.79%

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-2021-22902
Severity
HIGH
CVSS
7.5
EPSS
2.79%

Original NVD Description

The actionpack ruby gem (a framework for handling and responding to web requests in Rails) before 6.0.3.7, 6.1.3.2 suffers from a possible denial of service vulnerability in the Mime type parser of Action Dispatch. Carefully crafted Accept headers can cause the mime type parser in Action Dispatch to do catastrophic backtracking in the regular expression engine.

Related CVEs

Other vulnerabilities affecting the same vendor(s)