CVE-2026-6968

Multiple Path Traversal Variants in awslabs/tough

Assigner: AMZN
Reserved: 24.04.2026 Published: 24.04.2026 Updated: 24.04.2026

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.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L
CVSS Score: 5.9

Attack Vector	Network	Scope	Unchanged
Attack Complexity	High	Confidentiality Impact	None
Privileges Required	Low	Integrity Impact	High
User Interaction	None	Availability Impact	Low

CVSS 3.1

CVSS Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:L
CVSS Score: 7.1

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	None
Attack Complexity	High	Integrity	High	Integrity	High
Attack Requirements	Present	Availability	None	Availability	Low
Privileges Required	Low
User Interaction	None

CVSS 4.0

Product Status

Vendor	AWS
Product	tough
Versions	Default: unaffected Version 0.22.0 is unaffected

Vendor

AWS

Product

tough

Versions

Default: unaffected

Version 0.22.0 is unaffected

Vendor	AWS
Product	tuftool
Versions	Default: unaffected Version 0.15.0 is unaffected

Vendor

AWS

Product

tuftool

Versions

Default: unaffected

Version 0.15.0 is unaffected

References

Problem Types

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') CWE

Impacts