How severe is CVE-2026-6968?

CVE-2026-6968 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability low.

Is CVE-2026-6968 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-6968?

CVE-2026-6968 primarily affects Amazon Tough. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-6968?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-6968 have an EU (EUVD) identifier?

Yes. CVE-2026-6968 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-25629.

When was CVE-2026-6968 published?

CVE-2026-6968 was published on 2026-04-24 and last updated on 2026-06-17.

CVE-2026-6968

CVE-2026-6968 is a medium-severity vulnerability in Amazon Tough with a CVSS 3.x base score of 5.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
CVSS v4: 7.1
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-25629
Weakness: CWE-22
Affected product: Amazon Tough
Published: 2026-04-24
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-6968?: 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.
How severe is CVE-2026-6968?: CVE-2026-6968 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability low.
Is CVE-2026-6968 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-6968?: CVE-2026-6968 primarily affects Amazon Tough. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-6968?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-6968 have an EU (EUVD) identifier?: Yes. CVE-2026-6968 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-25629.
When was CVE-2026-6968 published?: CVE-2026-6968 was published on 2026-04-24 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:amazon:tough:*:*:*:*:*:rust:*:*
cpe:2.3:a:amazon:tuftool:*:*:*:*:*:rust:*:*

More vulnerabilities in Amazon Tough

CVE-2020-15093 — High (CVSS 8.6): The tough library (Rust/crates.io) prior to version 0.7.1 does not properly verify the threshold of cryptographic…
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CVE-2026-6967 — Medium (CVSS 5.9): Missing expiration, hash, and length enforcement in delegated metadata validation in awslabs/tough before tough-v0.22.0…
CVE-2026-6966 — Medium (CVSS 5.3): Improper verification of cryptographic signature uniqueness in delegated role validation in awslabs/tough before…
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