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.
{
"cwe_ids": [
"CWE-345"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/6xxx/CVE-2026-6967.json",
"cna_assigner": "AMZN"
}{
"cpe": [
"cpe:2.3:a:amazon:tough:*:*:*:*:*:rust:*:*",
"cpe:2.3:a:amazon:tuftool:*:*:*:*:*:rust:*:*"
],
"extracted_events": [
{
"introduced": "0.9.0"
},
{
"fixed": "0.22.0"
},
{
"introduced": "0"
},
{
"fixed": "0.15.0"
}
],
"source": [
"CPE_RANGE",
"REFERENCES"
]
}