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CVE-2026-30949— Parse Server is missing audience validation in Keycloak authentication adapter

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 9.5.2-alpha.5之前版本和8.6.18之前版本存在授权问题漏洞，该漏洞源于Keycloak身份验证适配器未验证azp声明，可能导致账户接管。

AI Predicted 8.8 Difficulty: Easy EPSS 0.66% · P50

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-30949

Vulnerability Information
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Vulnerability Title
Parse Server is missing audience validation in Keycloak authentication adapter
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 9.5.2-alpha.5 and 8.6.18, the Keycloak authentication adapter does not validate the azp (authorized party) claim of Keycloak access tokens against the configured client-id. A valid access token issued by the same Keycloak realm for a different client application can be used to authenticate as any user on the Parse Server that uses the Keycloak adapter. This enables cross-application account takeover in multi-client Keycloak realms. All Parse Server deployments that use the Keycloak authentication adapter with a Keycloak realm that has multiple client applications are affected. This vulnerability is fixed in 9.5.2-alpha.5 and 8.6.18.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/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 9.5.2-alpha.5之前版本和8.6.18之前版本存在授权问题漏洞，该漏洞源于Keycloak身份验证适配器未验证azp声明，可能导致账户接管。
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 < 9.5.2-alpha.5 -

II. Public POCs for CVE-2026-30949

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III. Intelligence Information for CVE-2026-30949

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Patches & Fixes for CVE-2026-30949 (1)

Vendor Advisories for CVE-2026-30949 (1)

Vendor Pages for CVE-2026-30949 (1)

Same Patch Batch · parse-community · 2026-03-10 · 14 CVEs total

CVE-2026-30966 10.0 CRITICAL Parse Server role escalation and CLP bypass via direct `_Join` table write
CVE-2026-30939 Parse Server has Denial of Service (DoS) and Cloud Function Dispatch Bypass via Prototype
CVE-2026-30941 Parse Server has a NoSQL injection via token type in password reset and email verification
CVE-2026-30938 Parse Server has denylist `requestKeywordDenylist` keyword scan bypass through nested obje
CVE-2026-30948 Parse Server has stored cross-site scripting (XSS) via SVG file upload
CVE-2026-30946 Parse Server affected by denial-of-service via unbounded query complexity in REST and Grap
CVE-2026-30947 Parse Server ha a bypass of class-level permissions in LiveQuery
CVE-2026-31800 Parse Server: Classes `_GraphQLConfig` and `_Audience` master key bypass via generic class
CVE-2026-30972 Parse Server has a rate limit bypass via batch request endpoint
CVE-2026-30962 Parse Server has a protected fields bypass via logical query operators
CVE-2026-30967 Parse Server OAuth2 authentication adapter account takeover via identity spoofing
CVE-2026-30965 Parse Server session token exfiltration via `redirectClassNameForKey` query parameter
CVE-2026-31828 Parse Server has an LDAP injection via unsanitized user input in DN and group filter const

IV. Related Vulnerabilities

Same product: parse-server
Same vendor: parse-community
Same weakness: CWE-287

V. Comments for CVE-2026-30949

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