Vulnerability Details CVE-2026-6966
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 5.8%
CVSS Severity
CVSS v3 Score 5.3
Products affected by CVE-2026-6966
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cpe:2.3:a:amazon:tough:0.1.0
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cpe:2.3:a:amazon:tough:0.10.0
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cpe:2.3:a:amazon:tough:0.11.0
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cpe:2.3:a:amazon:tough:0.11.1
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cpe:2.3:a:amazon:tough:0.11.2
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cpe:2.3:a:amazon:tough:0.11.3
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cpe:2.3:a:amazon:tough:0.12.0
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cpe:2.3:a:amazon:tough:0.12.1
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cpe:2.3:a:amazon:tough:0.12.2
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cpe:2.3:a:amazon:tough:0.12.3
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cpe:2.3:a:amazon:tough:0.12.4
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cpe:2.3:a:amazon:tough:0.12.5
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cpe:2.3:a:amazon:tough:0.13.0
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cpe:2.3:a:amazon:tough:0.14.0
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cpe:2.3:a:amazon:tough:0.15.0
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cpe:2.3:a:amazon:tough:0.16.0
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cpe:2.3:a:amazon:tough:0.17.0
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cpe:2.3:a:amazon:tough:0.17.1
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cpe:2.3:a:amazon:tough:0.18.0
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cpe:2.3:a:amazon:tough:0.19.0
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cpe:2.3:a:amazon:tough:0.2.0
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cpe:2.3:a:amazon:tough:0.20.0
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cpe:2.3:a:amazon:tough:0.21.0
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cpe:2.3:a:amazon:tough:0.3.0
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cpe:2.3:a:amazon:tough:0.4.0
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cpe:2.3:a:amazon:tough:0.5.0
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cpe:2.3:a:amazon:tough:0.6.0
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cpe:2.3:a:amazon:tough:0.7.0
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cpe:2.3:a:amazon:tough:0.7.1
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cpe:2.3:a:amazon:tough:0.8.0
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cpe:2.3:a:amazon:tough:0.9.0
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cpe:2.3:a:amazon:tuftool:0.1.0
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cpe:2.3:a:amazon:tuftool:0.1.1
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cpe:2.3:a:amazon:tuftool:0.10.0
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cpe:2.3:a:amazon:tuftool:0.10.1
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cpe:2.3:a:amazon:tuftool:0.10.2
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cpe:2.3:a:amazon:tuftool:0.10.3
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cpe:2.3:a:amazon:tuftool:0.11.0
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cpe:2.3:a:amazon:tuftool:0.11.1
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cpe:2.3:a:amazon:tuftool:0.12.0
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cpe:2.3:a:amazon:tuftool:0.13.0
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cpe:2.3:a:amazon:tuftool:0.14.0
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cpe:2.3:a:amazon:tuftool:0.2.0
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cpe:2.3:a:amazon:tuftool:0.3.0
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cpe:2.3:a:amazon:tuftool:0.4.0
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cpe:2.3:a:amazon:tuftool:0.4.1
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cpe:2.3:a:amazon:tuftool:0.5.0
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cpe:2.3:a:amazon:tuftool:0.6.0
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cpe:2.3:a:amazon:tuftool:0.6.1
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cpe:2.3:a:amazon:tuftool:0.6.2
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cpe:2.3:a:amazon:tuftool:0.6.3
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cpe:2.3:a:amazon:tuftool:0.6.4
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cpe:2.3:a:amazon:tuftool:0.7.0
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cpe:2.3:a:amazon:tuftool:0.7.1
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cpe:2.3:a:amazon:tuftool:0.7.2
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cpe:2.3:a:amazon:tuftool:0.8.0
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cpe:2.3:a:amazon:tuftool:0.8.1
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cpe:2.3:a:amazon:tuftool:0.8.2
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cpe:2.3:a:amazon:tuftool:0.9.0