CVE-2026-34363
Description
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.65 and 9.7.0-alpha.9, when multiple clients subscribe to the same class via LiveQuery, the event handlers process each subscriber concurrently using shared mutable objects. The sensitive data filter modifies these shared objects in-place, so when one subscriber's filter removes a protected field, subsequent subscribers may receive the already-filtered object. This can cause protected fields and authentication data to leak to clients that should not see them, or cause clients that should see the data to receive an incomplete object. Additionally, when an afterEvent Cloud Code trigger is registered, one subscriber's trigger modifications can leak to other subscribers through the same shared mutable state. Any Parse Server deployment using LiveQuery with protected fields or afterEvent triggers is affected when multiple clients subscribe to the same class. This issue has been patched in versions 8.6.65 and 9.7.0-alpha.9.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
parse-servernpm | >= 9.0.0, < 9.7.0-alpha.9 | 9.7.0-alpha.9 |
parse-servernpm | < 8.6.65 | 8.6.65 |
Affected products
11cpe:2.3:a:parseplatform:parse-server:9.7.0:alpha1:*:*:*:node.js:*:*+ 8 more
- cpe:2.3:a:parseplatform:parse-server:9.7.0:alpha1:*:*:*:node.js:*:*
- cpe:2.3:a:parseplatform:parse-server:9.7.0:alpha2:*:*:*:node.js:*:*
- cpe:2.3:a:parseplatform:parse-server:9.7.0:alpha3:*:*:*:node.js:*:*
- cpe:2.3:a:parseplatform:parse-server:9.7.0:alpha4:*:*:*:node.js:*:*
- cpe:2.3:a:parseplatform:parse-server:9.7.0:alpha5:*:*:*:node.js:*:*
- cpe:2.3:a:parseplatform:parse-server:9.7.0:alpha6:*:*:*:node.js:*:*
- cpe:2.3:a:parseplatform:parse-server:9.7.0:alpha7:*:*:*:node.js:*:*
- cpe:2.3:a:parseplatform:parse-server:9.7.0:alpha8:*:*:*:node.js:*:*
- cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:*range: <8.6.65
- osv-coords2 versions
< 8.6.65+ 1 more
- (no CPE)range: < 8.6.65
- (no CPE)range: >= 9.0.0, < 9.7.0-alpha.9
Patches
Vulnerability mechanics
References
7- github.com/parse-community/parse-server/commit/5834e29234593addaa0251a85f572ad4f376320bnvdPatchWEB
- github.com/parse-community/parse-server/commit/776c71c3078e77d38c94937f463741793609d055nvdPatchWEB
- github.com/parse-community/parse-server/pull/10330nvdIssue TrackingPatchWEB
- github.com/parse-community/parse-server/pull/10331nvdIssue TrackingPatchWEB
- github.com/parse-community/parse-server/security/advisories/GHSA-m983-v2ff-wq65nvdPatchVendor AdvisoryWEB
- github.com/advisories/GHSA-m983-v2ff-wq65ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-34363ghsaADVISORY
News mentions
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