Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.6.0-alpha.17 and 8.6.42, an authenticated user can overwrite server-generated session fields (sessionToken, expiresAt, createdWith) when creating a session object via POST /classes/_Session. This allows bypassing the server's session expiration policy by setting an arbitrary far-future expiration date. It also allows setting a predictable session token value. Starting in version 9.6.0-alpha.17 and 8.6.42, the session creation endpoint filters out server-generated fields from user-supplied data, preventing them from being overwritten. As a workaround, add a beforeSave trigger on the _Session class to validate and reject or strip any user-supplied values for sessionToken, expiresAt, and createdWith.
{
"cna_assigner": "GitHub_M",
"cwe_ids": [
"CWE-915"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/32xxx/CVE-2026-32742.json"
}{
"extracted_events": [
{
"introduced": "0"
},
{
"fixed": "8.6.42"
},
{
"introduced": "9.0.0"
},
{
"fixed": "9.6.0"
}
],
"cpe": "cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:*",
"source": "CPE_RANGE"
}