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CVE-2021-22904 PUBLISHED

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.

EPSS 8.20% · 92.1th percentile

Risk Scores

EPSS Score
8.20%
92.1th percentile

Affected Products

VendorProductVersions
Ubuntu:Pro:20.04:LTSrails2:5.2.3+dfsg-3ubuntu0.1~esm1, 2:5.2.3+dfsg-3, 2:5.2.2.1+dfsg-1ubuntu1
Ubuntu:24.04:LTSrails0, 2:6.1.7.3+dfsg-3, 2:6.1.7.3+dfsg-2build1
Ubuntu:25.10rails2:7.2.2.1+dfsg-7, 0, 2:6.1.7.3+dfsg-7
Ubuntu:Pro:22.04:LTSrails2:6.1.4.1+dfsg-8ubuntu2+esm1, 2:6.1.4.1+dfsg-8ubuntu2, 2:6.0.3.7+dfsg-2
Ubuntu:Pro:18.04:LTSrails2:4.2.9-2, 2:4.2.10-0ubuntu4, 2:4.2.10-0ubuntu4+esm1
Ubuntu:Pro:16.04:LTSrails2:4.2.6-1ubuntu0.1~esm1, 2:4.2.6-1ubuntu0.1~esm2, 2:4.2.5.1-1

Timeline

References

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