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CVE-2026-39321

nvd nist
Published: Apr 7, 2026Modified: Jun 17, 2026

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6.3
Vector
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XShow less
Source: security-advisories@github.com (Secondary)

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.

Affected (7)

Parseplatform
1 product
Parse Server
Configuration A
7 vulnerable
Vulnerable SoftwareAffected Versions
Parseplatform
Parse Server
Before 8.6.74
Parse Server
From 9.0.0 to 9.8.0
Parse Server
Version 9.8.0 alpha1
Parse Server
Version 9.8.0 alpha2
Parse Server
Version 9.8.0 alpha3
Parse Server
Version 9.8.0 alpha4
Parse Server
Version 9.8.0 alpha5

Related CWEs

CWE-208
Observable Timing Discrepancy
Two separate operations in a product require different amounts of time to complete, in a way that is observable to an actor and reveals security-relevant information about the state of the product, such as whether a particular operation was successful or not.

References (3)

Source: security-advisories@github.com
Issue TrackingPatch
Source: security-advisories@github.com
Issue TrackingPatch
Source: security-advisories@github.com
MitigationPatchVendor Advisory

Timeline

No history available yet.