CVE-2026-6966highCWE-347

Signature Threshold Bypass in awslabs/tough Delegated Roles

21Vexday Risk Score

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

ssvc Trackcvss 7epss 0.3%

probabilidade de exploração

0.3%top 82% das CVEs

exploração observada

nãonenhuma fonte reporta

Improper verification of cryptographic signature uniqueness in delegated role validation in awslabs/tough before tough-v0.22.0 allows remote authenticated users to bypass the TUF signature threshold requirement by duplicating a valid signature, causing the client to accept forged delegated role metadata. We recommend you upgrade to tough-v0.22.0 / tuftool-v0.15.0.

CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N

Produtos afetados

AWS · tough AWS · tuftool

Referências

https://aws.amazon.com/security/security-bulletins/2026-019-aws/https://crates.io/crates/tough/0.22.0 https://crates.io/crates/tuftool/0.15.0 https://github.com/awslabs/tough/releases/tag/tough-v0.22.0 https://github.com/awslabs/tough/releases/tag/tuftool-v0.15.0 https://github.com/awslabs/tough/security/advisories/GHSA-8m7c-8m39-rv4x