Vulnerability · Published Apr 24, 2026 · Assigned by AMZN

CVE-2026-6968Multiple Path Traversal Variants in awslabs/tough

Medium 5.9

In plain English

A medium-severity path traversal in tough from AWS. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 45% of all known vulnerabilities).

Severity (CVSS 3.1)5.9Medium

Exploit odds (30 days)0.5%top 54.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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 (as reported)

Vendor	Product	Versions
AWS	tough	0 – before 0.22.0
AWS	tuftool	0 – before 0.15.0

Weakness: CWE-22 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L

References

https://aws.amazon.com/security/security-bulletins/2026-019-aws/ vendor-advisory
https://github.com/awslabs/tough/releases/tag/tough-v0.22.0 patch
https://github.com/awslabs/tough/releases/tag/tuftool-v0.15.0 patch
https://crates.io/crates/tough/0.22.0 patch
https://crates.io/crates/tuftool/0.15.0 patch
https://github.com/awslabs/tough/security/advisories/GHSA-v57p-gppj-p9vg third-party-advisory