CVE-2026-33174mediumCWE-789

CVE-2026-33174: falha de média gravidade em rails activestorage

Rails Active Storage has a possible DoS vulnerability when in proxy mode via Range requests

Publicada em · Atualizada em

13Vexday Risk Score

Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.

ssvc Trackcvss 6.6epss 0.7%
probabilidade de exploração
0.7%top 48% das CVEs
exploração observada
nãonenhuma fonte reporta
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U
Produtos afetados
rails · activestorage
CVEs relacionadas — rails activestorage

No mesmo produto, das mais perigosas para as menos.

CVE-2026-33202MEDIUMRails Active Storage has possible glob injection in its DiskServiceEPSS 0.8%CVE-2026-33195HIGHRails Active Storage has possible Path Traversal in DiskServiceEPSS 0.7%CVE-2026-33658LOWRails Active Storage has a possible DoS vulnerability in proxy mode via multi-range requestsEPSS 0.6%CVE-2026-33173MEDIUMRails Active Storage has possible content type bypass via metadata in direct uploadsEPSS 0.4%
Referências
https://github.com/rails/rails/commit/2cd933c366b777f873d4d590127da2f4a25e4ba5https://github.com/rails/rails/commit/42012eaaa88dfc7d0030161b2bc8074a7bbce92ahttps://github.com/rails/rails/commit/8159a9c3de3f27a2bcf2866b8bf9ceb9075e229bhttps://github.com/rails/rails/releases/tag/v7.2.3.1https://github.com/rails/rails/releases/tag/v8.0.4.1https://github.com/rails/rails/releases/tag/v8.1.2.1https://github.com/rails/rails/security/advisories/GHSA-r46p-8f7g-vvvg