CVE-2026-33658

N/A

Description

Active Storage allows users to attach cloud and local files in Rails applications. Prior to versions 8.1.2.1, 8.0.4.1, and 7.2.3.1 Active Storage's proxy controller does not limit the number of byte ranges in an HTTP Range header. A request with thousands of small ranges causes disproportionate CPU usage compared to a normal request for the same file, possibly resulting in a DoS vulnerability. Versions 8.1.2.1, 8.0.4.1, and 7.2.3.1 contain a patch.

CVE Details

CVSS v3.1 ScoreN/A

Published3/26/2026

Last Modified3/30/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-770

References

https://github.com/rails/rails/releases/tag/v7.2.3.1(security-advisories@github.com)

https://github.com/rails/rails/releases/tag/v8.0.4.1(security-advisories@github.com)

https://github.com/rails/rails/releases/tag/v8.1.2.1(security-advisories@github.com)

https://github.com/rails/rails/security/advisories/GHSA-p9fm-f462-ggrg(security-advisories@github.com)

https://github.com/rubysec/ruby-advisory-db/blob/master/gems/activestorage/CVE-2026-33658.yml(security-advisories@github.com)

IOC Correlations

No correlations recorded

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