CVE-2026-39321

LOW

3.7

Description

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.8.0-alpha.6 and 8.6.74, he login endpoint response time differs measurably depending on whether the submitted username or email exists in the database. When a user is not found, the server responds immediately. When a user exists but the password is wrong, a bcrypt comparison runs first, adding significant latency. This timing difference allows an unauthenticated attacker to enumerate valid usernames. This vulnerability is fixed in 9.8.0-alpha.6 and 8.6.74.

CVE Details

CVSS v3.1 Score3.7

SeverityLOW

CVSS VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack VectorNETWORK

ComplexityHIGH

Privileges RequiredNONE

User InteractionNONE

Published4/7/2026

Last Modified4/15/2026

Sourcenvd

Honeypot Sightings0

Affected Products

parseplatform:parse-server

Weaknesses (CWE)

CWE-208

References

https://github.com/parse-community/parse-server/pull/10398(security-advisories@github.com)

https://github.com/parse-community/parse-server/pull/10399(security-advisories@github.com)

https://github.com/parse-community/parse-server/security/advisories/GHSA-mmpq-5hcv-hf2v(security-advisories@github.com)

IOC Correlations

No correlations recorded

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