Home/CVE/Incomplete path traversal fixes in awslabs/tough before tough-v0.22.0 allow remote authenticated users with delegated si
CVE

CVE-2026-6968

Incomplete path traversal fixes in awslabs/tough before tough-v0.22.0 allow remote authenticated users with delegated si

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.

MEDIUM · CVSS 5.9 EPSS 0.0009
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

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

Affected Products & Versions

2
amazon tough>= 0.9.0 and < 0.22.0
amazon tuftool< 0.15.0
▣

Scoring & Timeline

5.9
MEDIUM · CVSS v3.1 · ff89ba41-3aa1-4d27-914a-91399e9639e5
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD24 Apr 2026 · 08:16 PM
CVSS VectorCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

1
aws-security2026-019-aws
🔗

References & Sources

6
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://aws.amazon.com/security/security-bulletins/2026-019-aws/Vendor Advisory
https://crates.io/crates/tough/0.22.0Product
https://crates.io/crates/tuftool/0.15.0Product
https://github.com/awslabs/tough/releases/tag/tough-v0.22.0Release Notes
https://github.com/awslabs/tough/releases/tag/tuftool-v0.15.0Release Notes
https://github.com/awslabs/tough/security/advisories/GHSA-v57p-gppj-p9vgVendor Advisory
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