VDB-359567 · CVE-2026-6968 · EUVD-2026-25629

AWS tough/tuftool prior 0.22.0 copy_target/link_target path traversal

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4.9	$0-$5k	0.00

Summaryinfo

A vulnerability was found in AWS tough and tuftool. It has been classified as critical. Affected is the function copy_target/link_target. The manipulation leads to path traversal. This vulnerability is uniquely identified as CVE-2026-6968. The attack is possible to be carried out remotely. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in AWS tough and tuftool. It has been rated as critical. This issue affects the function copy_target/link_target. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Impacted is integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at aws.amazon.com. The identification of this vulnerability is CVE-2026-6968 since 04/24/2026. The exploitation is known to be difficult. The attack may be initiated remotely. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1006 according to MITRE ATT&CK.

Upgrading to version 0.22.0 eliminates this vulnerability. The upgrade is hosted for download at github.com.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-25629). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 5.1
VulDB Meta Temp Score: 4.9

VulDB Base Score: 4.2
VulDB Temp Score: 4.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.9
CNA Vector (AMZN): 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Path traversal
CWE: CWE-22
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: tough/tuftool 0.22.0

Timelineinfo

04/24/2026 Advisory disclosed
04/24/2026 +0 days CVE reserved
04/24/2026 +0 days VulDB entry created
04/25/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: aws.amazon.com
Status: Confirmed

CVE: CVE-2026-6968 (🔒)
GCVE (CVE): GCVE-0-2026-6968
GCVE (VulDB): GCVE-100-359567
EUVD: 🔒

Entryinfo

Created: 04/24/2026 23:08
Updated: 04/25/2026 00:53
Changes: 04/24/2026 23:08 (76), 04/25/2026 00:53 (1)
Complete: 🔍
Cache ID: 216::103