CVE-2026-6968: Amazon Tough

Medium severity, CVSS 6.5. EPSS: 0.6% chance of exploitation in the next 30 days.

Incomplete path traversal fixes in awslabs/tough before tough-v0.22.0 allow remote authenticated users with delegated signing authority to write files outside intended output directories via absolute target names in copy_target/link_target, symlinked parent directories in save_target, or symlinked metadata filenames in SignedRole::write, because write paths trust the joined destination path without post-resolution containment verification. We recommend you upgrade to tough-v0.22.0 / tuftool-v0.15.0.

Affected products

• Amazon Tough: from 0.9.0, before 0.22.0 (fixed in 0.22.0)
• Amazon Tuftool: before 0.15.0 (fixed in 0.15.0)

Published 2026-04-24. Last modified 2026-06-17.