CVE-2026-33042— Parse Server affected by empty authData bypassing credential requirement on signup
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I. Basic Information for CVE-2026-33042
Vulnerability Information
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Vulnerability Title
Parse Server affected by empty authData bypassing credential requirement on signup
Source: NVD (National Vulnerability Database)
Vulnerability Description
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.6.0-alpha.29 and 8.6.49, a user can sign up without providing credentials by sending an empty `authData` object, bypassing the username and password requirement. This allows the creation of authenticated sessions without proper credentials, even when anonymous users are disabled. The fix in 9.6.0-alpha.29 and 8.6.49 ensures that empty or non-actionable `authData` is treated the same as absent `authData` for the purpose of credential validation on new user creation. Username and password are now required when no valid auth provider data is present. As a workaround, use a Cloud Code `beforeSave` trigger on the `_User` class to reject signups where `authData` is empty and no username/password is provided.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
认证机制不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Parse Server 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Parse Server是Parse Platform开源的一个开源后端，可以部署到任何可以运行 Node.js 的基础设施。 Parse Server 9.6.0-alpha.29之前版本和8.6.49之前版本存在授权问题漏洞，该漏洞源于空authData对象可绕过凭据要求，可能导致未经身份验证的会话创建。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| parse-community | parse-server | >= 9.0.0, < 9.6.0-alpha.29 | - |
II. Public POCs for CVE-2026-33042
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|---|
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Patches & Fixes for CVE-2026-33042 (2)
Vendor Advisories for CVE-2026-33042 (1)
Same Patch Batch · parse-community · 2026-03-18 · 9 CVEs total
| CVE-2026-32770 | 5.9 MEDIUM | Parse Server: LiveQuery subscription with invalid regular expression crashes server |
| CVE-2026-32742 | 4.3 MEDIUM | Parse Server session creation endpoint allows overwriting server-generated session fields |
| CVE-2026-32886 | Parse Server's Cloud function dispatch crashes server via prototype chain traversal | |
| CVE-2026-32728 | Parse Server has a stored XSS filter bypass via Content-Type MIME parameter and missing XM | |
| CVE-2026-32878 | Parse Server vulnerable to schema poisoning via prototype pollution in deep copy | |
| CVE-2026-32944 | Parse Server crash via deeply nested query condition operators | |
| CVE-2026-32943 | Parse Server has a password reset token single-use bypass via concurrent requests | |
| CVE-2026-33163 | Parse Server leaks protected fields via LiveQuery afterEvent trigger |
IV. Related Vulnerabilities
Same product: parse-server
- CVE-2026-43930
Parse Server: MFA SMS one-time password accepted twice under - CVE-2026-39381
Parse Server's Endpoint `/sessions/me` bypasses `_Session` ` - CVE-2026-39321
Parse Server has a login timing side-channel reveals user ex - CVE-2026-35200
Parse Server has a file upload Content-Type override via ext - CVE-2026-34784
Parse Server: Streaming file download bypasses afterFind fil
Same vendor: parse-community
- CVE-2026-43930
Parse Server: MFA SMS one-time password accepted twice under - CVE-2026-39381
Parse Server's Endpoint `/sessions/me` bypasses `_Session` ` - CVE-2026-39321
Parse Server has a login timing side-channel reveals user ex - CVE-2026-35200
Parse Server has a file upload Content-Type override via ext - CVE-2026-34784
Parse Server: Streaming file download bypasses afterFind fil
Same weakness: CWE-287
- CVE-2026-8994
Login with NEAR <= 0.3.3 - Authentication Bypass via 'accoun - CVE-2026-44847
MaxKB: Webhook Trigger Authentication Bypass - CVE-2026-47202
Kavita: Pre-Auth Account Takeover - CVE-2026-48896
Joomla! Core - [20260511] - MFA Authentication Bypass - CVE-2026-48897
Joomla! Core - [20260512] - MFA Authentication Bypass
V. Comments for CVE-2026-33042
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