CVE-2026-32742: Parse Server session creation endpoint allows overwriting server-generated session fields

March 17, 2026

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.

References

github.com/advisories/GHSA-5v7g-9h8f-8pgg
github.com/parse-community/parse-server
github.com/parse-community/parse-server/pull/10195
github.com/parse-community/parse-server/pull/10196
github.com/parse-community/parse-server/security/advisories/GHSA-5v7g-9h8f-8pgg
nvd.nist.gov/vuln/detail/CVE-2026-32742

Code Behaviors & Features

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