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CVE-2026-33174

HIGH

7.5

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, when serving files through Active Storage's proxy delivery mode, the proxy controller loads the entire requested byte range into memory before sending it. A request with a large or unbounded Range header (e.g. `bytes=0-`) could cause the server to allocate memory proportional to the file size, possibly resulting in a DoS vulnerability through memory exhaustion. Versions 8.1.2.1, 8.0.4.1, and 7.2.3.1 contain a patch.

Details CVE

Score CVSS v3.17.5

SeveriteHIGH

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

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisNONE

Interaction utilisateurNONE

Publie3/24/2026

Derniere modification3/24/2026

Sourcenvd

Observations honeypot0

Produits affectes

rubyonrails:rails

Faiblesses (CWE)

CWE-789

References

https://github.com/rails/rails/commit/2cd933c366b777f873d4d590127da2f4a25e4ba5(security-advisories@github.com)

https://github.com/rails/rails/commit/42012eaaa88dfc7d0030161b2bc8074a7bbce92a(security-advisories@github.com)

https://github.com/rails/rails/commit/8159a9c3de3f27a2bcf2866b8bf9ceb9075e229b(security-advisories@github.com)

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-r46p-8f7g-vvvg(security-advisories@github.com)

Correlations IOC

Aucune correlation enregistree

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