CVE-2026-33170mediumCWE-79

CVE-2026-33170: falha de média gravidade em rails activesupport

Rails Active Support has a possible XSS vulnerability in SafeBuffer#%

Publicada em · Atualizada em

13Vexday Risk Score

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

ssvc Trackcvss 5.3epss 0.4%
probabilidade de exploração
0.4%top 64% das CVEs
exploração observada
nãonenhuma fonte reporta
Active Support is a toolkit of support libraries and Ruby core extensions extracted from the Rails framework. Prior to versions 8.1.2.1, 8.0.4.1, and 7.2.3.1, `SafeBuffer#%` does not propagate the `@html_unsafe` flag to the newly created buffer. If a `SafeBuffer` is mutated in place (e.g. via `gsub!`) and then formatted with `%` using untrusted arguments, the result incorrectly reports `html_safe? == true`, bypassing ERB auto-escaping and possibly leading to XSS. 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:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Produtos afetados
rails · activesupport
CVEs relacionadas — rails activesupport

No mesmo produto, das mais perigosas para as menos.

CVE-2026-33176MEDIUMRails Active Support has a possible DoS vulnerability in its number helpersEPSS 1.0%CVE-2026-33169MEDIUMRails Active Support has a possible ReDoS vulnerability in number_to_delimitedEPSS 0.6%
Referências
https://github.com/rails/rails/commit/50d732af3b7c8aaf63cbcca0becbc00279b215b7https://github.com/rails/rails/commit/6e8a81108001d58043de9e54a06fca58962fc2dbhttps://github.com/rails/rails/commit/c1ad0e8e1972032f3395853a5e99cea035035bebhttps://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-89vf-4333-qx8v