Payload is a free and open source headless content management system. In @payloadcms/storage-s3 versions before 3.90.0 and canary versions before 4.0.0-canary.34, an authenticated user can overwrite an existing S3 object belonging to another upload collection when client uploads are enabled for multiple collections sharing a bucket and useCompositePrefixes is false or unset. This bypasses the target collection's access controls and prior file validation. This issue is fixed in versions 3.90.0 and 4.0.0-canary.34.
{
"cna_assigner": "GitHub_M",
"cwe_ids": [
"CWE-639"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/105xxx/CVE-2026-105867.json",
"unresolved_ranges": [
{
"extracted_events": [
{
"range": [
{
"introduced": "4.0.0-canary.0"
},
{
"fixed": "4.0.0-canary.34"
},
{
"introduced": "4.0.0-canary.0"
},
{
"fixed": "4.0.0-canary.34"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
}
]
}
]
}{
"extracted_events": [
{
"cpe": "cpe:2.3:a:payloadcms:payload:*:*:*:*:*:node.js:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "3.90.0"
}
],
"source": "CPE_RANGE"
},
{
"range": [
{
"fixed": "2df8238fbf17edfce335c399b90bf524ba9906a2"
}
],
"source": "REFERENCES_COMMIT"
},
{
"original_tag": "v3.90.0",
"range": [
{
"fixed": "e10b60228b92b680663110ea2af431643bfc6126"
}
],
"source": "REFERENCES_TAG"
}
]
}