CVE-2026-6966
- Source
- https://cve.org/CVERecord?id=CVE-2026-6966
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-6966.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-6966
- Aliases
- Downstream
- Published
- 2026-04-24T19:38:24Z
- Modified
- 2026-11-07T02:30:22Z
- Severity
-
- 7.0 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N CVSS Calculator
- Summary
- Signature Threshold Bypass in awslabs/tough Delegated Roles
- Details
-
Improper verification of cryptographic signature uniqueness in delegated role validation in awslabs/tough before tough-v0.22.0 allows remote authenticated users to bypass the TUF signature threshold requirement by duplicating a valid signature, causing the client to accept forged delegated role metadata.
We recommend you upgrade to tough-v0.22.0 / tuftool-v0.15.0.
- Database specific
{ "cna_assigner": "AMZN", "cwe_ids": [ "CWE-347" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/6xxx/CVE-2026-6966.json" }- References
-
- https://aws.amazon.com/security/security-bulletins/2026-019-aws/
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/6xxx/CVE-2026-6966.json
- https://github.com/awslabs/tough/security/advisories/GHSA-8m7c-8m39-rv4x
- https://nvd.nist.gov/vuln/detail/CVE-2026-6966
- https://crates.io/crates/tough/0.22.0
- https://crates.io/crates/tuftool/0.15.0
- https://github.com/awslabs/tough/releases/tag/tough-v0.22.0
- https://github.com/awslabs/tough/releases/tag/tuftool-v0.15.0
Affected packages
Git / github.com/awslabs/tough
Affected ranges
- Type
- GIT
- Repo
- https://github.com/awslabs/tough
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixed
- Database specific
-
Show details
{ "extracted_events": [ { "cpe": "cpe:2.3:a:amazon:tough:*:*:*:*:*:rust:*:*", "range": [ { "introduced": "0" }, { "fixed": "0.22.0" } ], "source": "CPE_RANGE" }, { "cpe": "cpe:2.3:a:amazon:tuftool:*:*:*:*:*:rust:*:*", "range": [ { "introduced": "0" }, { "fixed": "0.15.0" } ], "source": "CPE_RANGE" }, { "original_tag": "tough-v0.22.0", "range": [ { "fixed": "606dc87a8456c8f6e24c4a85e12b280cf2c9ca00" } ], "source": "REFERENCES_TAG" }, { "original_tag": "tuftool-v0.15.0", "range": [ { "fixed": "606dc87a8456c8f6e24c4a85e12b280cf2c9ca00" } ], "source": "REFERENCES_TAG" } ] }
Affected versions
olpc-cjson-v0.*
olpc-cjson-v0.1.0
olpc-cjson-v0.1.1
olpc-cjson-v0.1.2
olpc-cjson-v0.1.3
olpc-cjson-v0.1.4
tough-kms-v0.*
tough-kms-v0.1.0
tough-kms-v0.1.1
tough-kms-v0.10.0
tough-kms-v0.11.0
tough-kms-v0.12.0
tough-kms-v0.13.0
tough-kms-v0.3.1
tough-kms-v0.3.2
tough-kms-v0.3.3
tough-kms-v0.3.4
tough-kms-v0.3.6
tough-kms-v0.4.0
tough-kms-v0.4.1
tough-kms-v0.4.2
tough-kms-v0.5.0
tough-kms-v0.6.0
tough-kms-v0.7.0
tough-kms-v0.8.0
tough-kms-v0.9.0
tough-ssm-v0.*
tough-ssm-v0.1.0
tough-ssm-v0.10.0
tough-ssm-v0.11.0
tough-ssm-v0.12.0
tough-ssm-v0.13.0
tough-ssm-v0.14.0
tough-ssm-v0.15.0
tough-ssm-v0.16.0
tough-ssm-v0.2.0
tough-ssm-v0.3.0
tough-ssm-v0.4.0
tough-ssm-v0.6.1
tough-ssm-v0.6.2
tough-ssm-v0.6.3
tough-ssm-v0.6.4
tough-ssm-v0.6.6
tough-ssm-v0.7.0
tough-ssm-v0.7.1
tough-ssm-v0.7.2
tough-ssm-v0.8.0
tough-ssm-v0.9.0
tough-v0.*
tough-v0.1.0
tough-v0.11.1
tough-v0.11.2
tough-v0.11.3
tough-v0.12.0
tough-v0.12.2
tough-v0.12.3
tough-v0.12.4
tough-v0.12.5
tough-v0.13.0
tough-v0.14.0
tough-v0.15.0
tough-v0.16.0
tough-v0.17.0
tough-v0.17.1
tough-v0.18.0
tough-v0.19.0
tough-v0.2.0
tough-v0.20.0
tough-v0.21.0
tough-v0.3.0
tough-v0.4.0
tough-v0.5.0
tough-v0.6.0
tough-v0.7.0
tough-v0.8.0
tough-v0.9.0
tuftool-v0.*
tuftool-v0.1.0
tuftool-v0.1.1
tuftool-v0.10.0
tuftool-v0.10.1
tuftool-v0.10.2
tuftool-v0.10.3
tuftool-v0.11.0
tuftool-v0.11.1
tuftool-v0.12.0
tuftool-v0.13.0
tuftool-v0.14.0
tuftool-v0.2.0
tuftool-v0.3.0
tuftool-v0.4.0
tuftool-v0.4.1
tuftool-v0.5.0
tuftool-v0.6.2
tuftool-v0.6.3
tuftool-v0.6.4
tuftool-v0.7.0
tuftool-v0.7.2
tuftool-v0.8.0
tuftool-v0.8.1
tuftool-v0.8.2
tuftool-v0.9.0