CVE-2026-33429— Parse Server: Protected field change detection oracle via LiveQuery watch parameter
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 8.6.54之前版本和9.6.0-alpha.43之前版本存在安全漏洞，该漏洞源于攻击者可通过订阅LiveQuery并观察受保护字段的更新事件来推断其变化，可能导致信息泄露。
Possible ATT&CK Techniques 1 AI
T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2026-33429
Vulnerability Information
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Vulnerability Title
Parse Server: Protected field change detection oracle via LiveQuery watch parameter
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 8.6.54 and 9.6.0-alpha.43, an attacker can subscribe to LiveQuery with a watch parameter targeting a protected field. Although the protected field value is properly stripped from event payloads, the presence or absence of update events reveals whether the protected field changed, creating a binary oracle. For boolean protected fields, the timing of change events is equivalent to knowing the field value. This issue has been patched in versions 8.6.54 and 9.6.0-alpha.43.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过差异性导致的信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
Parse Server 安全漏洞
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 8.6.54之前版本和9.6.0-alpha.43之前版本存在安全漏洞，该漏洞源于攻击者可通过订阅LiveQuery并观察受保护字段的更新事件来推断其变化，可能导致信息泄露。
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 | < 8.6.54 | - |
|
II. Public POCs for CVE-2026-33429
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-33429 (4)
Vendor Advisories for CVE-2026-33429 (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-2026-33508 | 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-2026-33409 | Parse Server: Auth provider validation bypass on login via partial authData | |
| 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-203
-
CVE-2026-11795
User Enumeration in Softtr's E-Commerce Pack -
CVE-2026-104416
Ghost 4.39.0 before 6.64.0 Invite Token Disclosure via Admin -
CVE-2026-104415
Ghost 0.7.2 before 6.64.0 Password Hash Ordering Disclosure -
CVE-2026-63573
Bleichenbacher padding oracle in CMS RSA PKCS#1 v1.5 key-tra -
CVE-2026-63567
IesEngine block-cipher mode checks padding before MAC (CBC p
V. Comments for CVE-2026-33429
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