Parse Server vulnerable to user enumeration via email verification endpoint

Description

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.

Recommendation

Update the parse-server package to the latest compatible version. Followings are version details:

• Affected version(s): **< 8.6.34

  >= 9.0.0-alpha.1, < 9.6.0-alpha.8**

• Patched version(s): **8.6.34

  9.6.0-alpha.8**

References

• GHSA-w54v-hf9p-8856
• CVE-2026-31901
• CWE-204
• CAPEC-310
• OWASP 2021-A6

Related Issues

• Parse Server email verification resend page leaks user existence - CVE-2026-33323
• Parse Server vulnerable to LDAP injection via unsanitized user input in DN and group filter construction - CVE-2026-31828
• Parse Server has a NoSQL injection via token type in password reset and email verification endpoints - CVE-2026-30941
• Parse Server vulnerable to SQL Injection via dot-notation sub-key name in `Increment` operation on PostgreSQL - CVE-2026-31871

Tags:

npm

parse-server