pnpm is a package manager. Prior to 10.34.0 and 11.4.0, pnpm can send user-level unscoped npm authentication credentials to a registry chosen by a repository-local .npmrc file. In the reproduced case, the user's npm config contains a default registry and an unscoped _authToken. The repository does not provide a token-bearing auth line. It only sets registry= to a different registry URL. During normal pnpm metadata/install workflows, pnpm binds the user-origin unscoped credential to the repository-selected registry and sends it as an Authorization header. This vulnerability is fixed in 10.34.0 and 11.4.0.
{
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50017.json",
"cwe_ids": [
"CWE-200",
"CWE-522"
],
"cna_assigner": "GitHub_M"
}{
"source": "CPE_RANGE",
"cpe": "cpe:2.3:a:pnpm:pnpm:*:*:*:*:*:node.js:*:*",
"extracted_events": [
{
"introduced": "0"
},
{
"fixed": "10.34.0"
},
{
"introduced": "11.0.0"
},
{
"fixed": "11.4.0"
}
]
}