Incorrect Authorization Affecting parse-server package, versions >=9.0.0 <9.10.6-alpha.4<8.6.112
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published5 Nov 2026
- disclosed3 Nov 2026
- creditUnknown
Introduced: 3 Nov 2026
NewCVE-2026-121413 (opens in a new tab)How to fix?
Upgrade parse-server to version 9.10.6-alpha.4, 8.6.112 or higher.
Overview
parse-server is a version of the Parse backend that can be deployed to any infrastructure that can run Node.js.
Affected versions of this package are vulnerable to Incorrect Authorization via the /upgradeToRevocableSession endpoint, which creates a new session for any valid session token without enforcing the _Session class create class-level permission. An attacker in possession of a user's session token can submit an already-revocable token to this endpoint to obtain additional sessions with a fresh expiration date, bound to an installation ID of the attacker's choosing, that persist even after the original session is logged out.
Note: This is only exploitable if the create class-level permission of the _Session class has been restricted from its default.