PT-2026-30950 · Unknown · Parse Server

Offset · Published 2026-04-07 · Updated 2026-04-09 · CVE-2026-39321

Positive Technologies (AI Summary)

CVSS v4.0

6.3

Medium

Base vector

AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Name of the Vulnerable Software and Affected Versions Parse Server versions prior to 9.8.0-alpha.6 and prior to 8.6.74

Description The timing difference in the response time of the login endpoint allows an unauthenticated attacker to enumerate valid usernames. When a user is not found, the server responds immediately. When a user exists but the password is incorrect, a bcrypt comparison adds significant latency. This timing difference can be exploited to identify valid usernames.

Recommendations Update to Parse Server version 9.8.0-alpha.6 or later. Update to Parse Server version 8.6.74 or later.

Fix

Weakness Enumeration

CWE-208

Related Identifiers

BIT-PARSE-2026-39321

CVE-2026-39321

GHSA-MMPQ-5HCV-HF2V

Affected Products

Parse Server

References · 8

• https://github.com/parse-community/parse-server/pull/10398 · Patch
• https://github.com/parse-community/parse-server/security/advisories/GHSA-mmpq-5hcv-hf2v · Vendor Advisory
• https://github.com/parse-community/parse-server/pull/10399 · Patch
• https://osv.dev/vulnerability/BIT-parse-2026-39321 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-mmpq-5hcv-hf2v · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-39321 · Security Note
• https://github.com/parse-community/parse-server · Note
• https://twitter.com/CVEnew/status/2041603166223917102 · Twitter Post