CVE-2026-31901
CVE-2026-31901 · Parse Server has user enumeration via email verification endpoint
This page contains facts from public vulnerability sources. Check the original advisory before updating.
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 8.6.34 and 9.6.0-alpha.8, the email verification endpoint (/verificationEmailRequest) returns distinct error responses depending on whether an email address belongs to an existing user, is already verified, or does not exist. An attacker can send requests with different email addresses and observe the error codes to determine which email addresses are registered in the application. This is a user enumeration vulnerability that affects any Parse Server deployment with email verification enabled (verifyUserEmails: true). This vulnerability is fixed in 8.6.34 and 9.6.0-alpha.8.
CVSS 6.3 · Medium · EPSS 0.4% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
parse-server
- Versions
- >= 9.0.0 < 9.6.0-alpha.8: Affected
- < 8.6.34: Affected
No fix published
parse-server npm
- Affected ranges
- SEMVER: ≥ 9.0.0-alpha.1, < 9.6.0-alpha.8
Update to 9.6.0-alpha.8
parse-server npm
- Affected ranges
- SEMVER: < 8.6.34
Update to 8.6.34