CVE-2026-30947
highpriority · track · 30OT risk · elevatedEPSS 0.004 · 38 %ileEUUSEPSS · scored 2026-10-28
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.3 and 8.6.16, class-level permissions (CLP) are not enforced for LiveQuery subscriptions. An unauthenticated or unauthorized client can subscribe to any LiveQuery-enabled class and receive real-time events for all objects, regardless of CLP restrictions. All Parse Server deployments that use LiveQuery with class-level permissions are affected. Data intended to be restricted by CLP is leaked to unauthorized subscribers in real time. This vulnerability is fixed in 9.5.2-alpha.3 and 8.6.16.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.6–8.7
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (9)
Products and version ranges known to be affected.
advisories (2)
Vendor and ecosystem advisories describing this.
- GHSA-7ch5-98q2-7289Parse Server has a bypass of class-level permissions in LiveQuery2026-03-11ghsa · osvUS
### Impact Class-level permissions (CLP) are not enforced for LiveQuery subscriptions. An unauthenticated or unauthorized client can subscribe to any LiveQuery-enabled class and receive real-time events for all objects, regardless of CLP restrictions. All Parse Server deployments that use LiveQuery with class-level permissions are affected. Data intended to be restricted by CLP is leaked to unauthorized subscribers in real time. ### Patches The fix enforces CLP before creating the subscription and during event delivery. ### Workarounds Disable LiveQuery for classes that use CLP restrictions by removing them from the `liveQuery.classNames` server configuration. ### References - GitHub security advisory: https://github.com/parse-community/parse-server/security/advisories/GHSA-7ch5-98q2-7289 - Fix Parse Server 9: https://github.com/parse-community/parse-server/releases/tag/9.5.2-alpha.3 - Fix Parse Server 8: https://github.com/parse-community/parse-server/releases/tag/8.6.16
- BIT-parse-2026-30947Parse Server ha a bypass of class-level permissions in LiveQuery2026-03-12vendor · osvUS
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.5.2 and 8.6.16, class-level permissions (CLP) are not enforced for LiveQuery subscriptions. An unauthenticated or unauthorized client can subscribe to any LiveQuery-enabled class and receive real-time events for all objects, regardless of CLP restrictions. All Parse Server deployments that use LiveQuery with class-level permissions are affected. Data intended to be restricted by CLP is leaked to unauthorized subscribers in real time. This vulnerability is fixed in 9.5.2 and 8.6.16.
also known as (5)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (10)
External citations — patches, advisories, analysis.
- https://github.com/parse-community/parse-server/releases/Patchcnnvd
- https://github.com/parse-community/parse-server/releases/tag/8.6.16cnnvd
- https://github.com/parse-community/parse-server/releases/tag/9.5.2-alpha.3cnnvd
- https://github.com/parse-community/parse-server/security/advisories/GHSA-7ch5-98q2-7289cnnvd
- https://github.com/parse-community/parse-server/releases/tag/8.6.16enisa_euvd
- https://github.com/parse-community/parse-server/releases/tag/9.5.2-alpha.3enisa_euvd
- https://github.com/parse-community/parse-server/security/advisories/GHSA-7ch5-98q2-7289enisa_euvd
- https://github.com/parse-community/parse-server/releases/tag/8.6.16ProductRelease Notesnvd
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