CVE-2026-33409— Parse Server: Auth provider validation bypass on login via partial authData
Quick assessment
Affected
parse-community parse-server
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
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 8.6.52之前版本和9.6.0-alpha.41之前版本存在授权问题漏洞，该漏洞源于身份验证绕过，可能导致攻击者无需凭据即可登录任何已链接第三方身份验证提供商的用户账户。
Possible ATT&CK Techniques 1 AI
T1078 · Valid Accounts
Get alerts for future matching vulnerabilities
Log in to subscribe
I. Basic Information for CVE-2026-33409
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗
Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
Parse Server: Auth provider validation bypass on login via partial authData
Source: CVE Program / CVE List V5
Vulnerability Description
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.52 and 9.6.0-alpha.41, an authentication bypass vulnerability allows an attacker to log in as any user who has linked a third-party authentication provider, without knowing the user's credentials. The attacker only needs to know the user's provider ID to gain full access to their account, including a valid session token. This affects Parse Server deployments where the server option allowExpiredAuthDataToken is set to true. The default value is false. This issue has been patched in versions 8.6.52 and 9.6.0-alpha.41.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5
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 8.6.52之前版本和9.6.0-alpha.41之前版本存在授权问题漏洞，该漏洞源于身份验证绕过，可能导致攻击者无需凭据即可登录任何已链接第三方身份验证提供商的用户账户。
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 | < 8.6.52 | - |
|
II. Public POCs for CVE-2026-33409
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
Premium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2026-33409
请登录查看更多情报信息。
Patches & Fixes for CVE-2026-33409 (4)
Vendor Advisories for CVE-2026-33409 (1)
Same Patch Batch · parse-community · 2026-03-24 · 11 CVEs total
| CVE-2026-33538 | Parse Server: Denial of service via unindexed database query for unconfigured auth provide | |
| CVE-2026-33527 | Parse Server: Session update endpoint allows overwriting server-generated session fields | |
| CVE-2026-33323 | Parse Server: Email verification resend page leaks user existence | |
| CVE-2026-33429 | Parse Server: Protected field change detection oracle via LiveQuery watch parameter | |
| CVE-2026-33508 | Parse Server: LiveQuery subscription query depth bypass | |
| CVE-2026-33421 | Parse Server: LiveQuery bypasses CLP pointer permission enforcement | |
| CVE-2026-33498 | Parse Server: Query condition depth bypass via pre-validation transform pipeline | |
| CVE-2026-33539 | Parse Server: SQL injection via aggregate and distinct field names in PostgreSQL adapter | |
| CVE-2026-33624 | Parse Server: MFA recovery code single-use bypass via concurrent requests | |
| CVE-2026-33627 | Parse Server: Auth data exposed via /users/me endpoint |
IV. Related Vulnerabilities
Same product: parse-server
-
CVE-2026-101042
Parse Server 9.0.0 Authentication Bypass via Unverified Prov -
CVE-2026-100632
Parse Server 9.0.0 before 9.10.1 Protected Fields Disclosure -
CVE-2026-100631
Parse Server 9.0.0 Unauthenticated Installation Deletion via -
CVE-2026-87806
Parse Server 9.0.0 Authentication Bypass via LDAP Empty Pass -
CVE-2026-66009
Parse Server 9.0.0 Information Disclosure via GraphQL Error
Same vendor: parse-community
-
CVE-2026-101042
Parse Server 9.0.0 Authentication Bypass via Unverified Prov -
CVE-2026-100632
Parse Server 9.0.0 before 9.10.1 Protected Fields Disclosure -
CVE-2026-100631
Parse Server 9.0.0 Unauthenticated Installation Deletion via -
CVE-2026-87806
Parse Server 9.0.0 Authentication Bypass via LDAP Empty Pass -
CVE-2026-66009
Parse Server 9.0.0 Information Disclosure via GraphQL Error
Same weakness: CWE-287
-
CVE-2026-105213
ZITADEL before 4.17.1 Authentication Bypass via Login V2 for -
CVE-2026-105212
ZITADEL before 3.4.14 and 4.16.2 Account Takeover via Passke -
CVE-2026-105210
ZITADEL before 4.17.1 Unauthenticated MFA Enrollment via Log -
CVE-2026-105133
Ahsay AhsayCBS API ApiStructsAction.java checkSysPwd imprope -
CVE-2026-97343
Burst Statistics <= 3.7.1 - Improper Authentication to Accou
V. Comments for CVE-2026-33409
No comments yet