VIR Vulnerability Intelligence Relay

CVE-2026-6968

medium
Published 2026-04-24 · Modified 2026-05-06
CVSS v3
6.5
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
CVSS v2
—
VIR risk
6.5

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.

Predictions

Exploit likelihood
75%
Patch ETA
—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: ff89ba41-3aa1-4d27-914a-91399e9639e5 — https://github.com/awslabs/tough/security/advisories/GHSA-v57p-gppj-p9vg

vendor Authored 2026-05-27

Vendor advisory: ff89ba41-3aa1-4d27-914a-91399e9639e5 — https://github.com/awslabs/tough/releases/tag/tuftool-v0.15.0

vendor Authored 2026-05-27

Vendor advisory: ff89ba41-3aa1-4d27-914a-91399e9639e5 — https://github.com/awslabs/tough/releases/tag/tough-v0.22.0

vendor Authored 2026-05-27

Vendor advisory: ff89ba41-3aa1-4d27-914a-91399e9639e5 — https://aws.amazon.com/security/security-bulletins/2026-019-aws/

Application impact
VendorProductVersionsFixed
aws amazontough{"startIncluding":"0.9.0","endExcluding":"0.22.0"}0.22.0
aws amazontuftool{"endExcluding":"0.15.0"}0.15.0

References

CWEs

CWE-22

Verify integrity in audit chain (admin only). AS-IS.