Improper Authentication Affecting parse-server package, versions >=8.0.2 <8.6.91>=9.0.0 <9.10.1-alpha.10
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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- published28 Sept 2026
- disclosed27 Sept 2026
- creditUnknown
Introduced: 27 Sep 2026
NewCVE-2026-101042 (opens in a new tab)How to fix?
Upgrade parse-server to version 8.6.91, 9.10.1-alpha.10 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 Improper Authentication via the password login flow in UsersRouter.js when a code-based auth adapter is in use. An attacker with a valid account can supply an unverified third-party auth provider identity during password-based login, causing the server to accept that identity without running the adapter's credential verification (beforeFind) step. This allows the attacker to link or assume an auth provider identity that belongs to another user, bypassing authentication controls and gaining unauthorized read and write access to that user's data.