CVE-2026-6967Disclosure(amazon / tough)

LOWCVSS 6.5 · MEDIUM

Signal is active with 2 mentions in latest observed window

Immediate actions

Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

Missing expiration, hash, and length enforcement in delegated metadata validation in awslabs/tough before tough-v0.22.0 allows remote authenticated users with delegated signing authority to bypass TUF specification integrity checks for delegated targets metadata and poison the local metadata cache, because load_delegations does not apply the same validation checks as the top-level targets metadata path. We recommend you upgrade to tough-v0.22.0 / tuftool-v0.15.0.

amazon CVEs Back to dashboard

0.0/ 10 priority

Sources & remediation

Vendor / third-party advisories

Other references

Weakness type (CWE)

CWE-345

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

tough
tuftool

Threat summary

4 mentions across 3 observed days
Momentum state: stable

What's happening

Technical details provided in 3 signals
Disclosure: 4 classified signals
Peaked at 2 mentions on most recent observed day (2026-05-21)
4 total mentions across 3 days

Affected systems

Vendors

amazon

Products

toughtuftool

Deep dive

Activity timeline4 mentions / 3d

Signal classification1 categories

Disclosure

4100.0%

Referenced assets2 URLs

By indicator

Classification over time

Date	Total	Labels

2026-04-24	1	Disclosure1
2026-04-25	1	Disclosure1
2026-05-21	2	Disclosure2

Full discourse4 posts

Lyrie.ai@lyrie_ai140d
Disclosure
CVE-2026-6967: Metadata Integrity Bypass (CVSS 5.9) CWE-345: Insufficient Verification of Data Authenticity TL;DR AWS's awslabs/tough library—the Rust implementation of The Update Framework (TUF) standard—has three vulnerabilities that allow authenticated attackers to…
Post summary
The text announces three metadata integrity bypass vulnerabilities in AWS's TUF implementation, noting a CVSS 5.9 score and CWE-345, but does not discuss exploitation, tool availability, or patches.
1000038
227 followersView on X
Lyrie.ai@lyrie_ai140d
Disclosure
The Foundation Cracked: AWS tough Library Breaks TUF Metadata Integrity (CVE-2026-6967, CVE-2026-6966, CVE-2026-6968). TL;DR AWS's awslabs/tough library—the Rust implementation of The Update Framework (TUF) standard—has three vulnerabilities that allow authenticated…
Post summary
The post announces three newly identified CVEs in AWS’s tough library, marking a vulnerability disclosure with minimal technical detail.
1000053
227 followersView on X
Vulmon Vulnerability Feed@VulmonFeeds167d
Disclosure
CVE-2026-6967 Delegated Metadata Validation Bypass in awslabs/tough Before v0.22.0 https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-6967
Post summary
The text announces CVE-2026-6967, noting a delegated metadata validation bypass in awslabs/tough before v0.22.0, with a link to a vulnerability database but no exploit or remediation details.
0000037
4.0K followersView on X
CVE@CVEnew167d
Disclosure
CVE-2026-6967 Missing expiration, hash, and length enforcement in delegated metadata validation in awslabs/tough before tough-v0.22.0 allows remote authenticated users with delegated… https://www.cve.org/CVERecord?id=CVE-2026-6967
Post summary
The post announces CVE-2026-6967, noting missing validation checks in awslabs/tough and that it allows remote authenticated users to exploit the flaw; no PoC, exploit tool, active exploitation, patch, or debunking claim is provided.
0000067
57.2K followersView on X

CPE platform detail2 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

2 of 2 entries

Part	Vendor	Product	Version	Target SW	Target HW
App	amazon	tough	-	rust	-
App	amazon	tuftool	-	rust	-

Explore more

Back to dashboard amazon CVEs tough vulnerabilities

What researchers are saying

CVE-2026-6967

Lyrie.ai[verified]@lyrie_aiDisclosure

The text announces three metadata integrity bypass vulnerabilities in AWS's TUF implementation, noting a CVSS 5.9 score and CWE-345, but does not discuss exploitation, tool availability, or patches.

Lyrie.ai[verified]@lyrie_aiDisclosure

The post announces three newly identified CVEs in AWS’s tough library, marking a vulnerability disclosure with minimal technical detail.

Vulmon Vulnerability Feed@VulmonFeedsDisclosure

The text announces CVE-2026-6967, noting a delegated metadata validation bypass in awslabs/tough before v0.22.0, with a link to a vulnerability database but no exploit or remediation details.

CVE@CVEnewDisclosure

The post announces CVE-2026-6967, noting missing validation checks in awslabs/tough and that it allows remote authenticated users to exploit the flaw; no PoC, exploit tool, active exploitation, patch, or debunking claim is provided.