Is CVE-2026-34573 actively exploited?

CVE-2026-34573 has no public evidence of in-the-wild exploitation as of 2026-04-02.

What is the CVSS score for CVE-2026-34573?

CVE-2026-34573 has a CVSS score of 8.2 (HIGH severity). Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X.

How do I patch CVE-2026-34573?

Patch guidance is available from parseplatform security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2026-34573.

Fix CVE-2026-34573 - HIGH parseplatform parse-server

Q: Which products are affected by CVE-2026-34573?

13 products: parseplatform parse-server, parseplatform parse-server, parseplatform parse-server, parseplatform parse-server, parseplatform parse-server, and 8 more.

Description

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.68 and 9.7.0-alpha.12, the GraphQL query complexity validator can be exploited to cause a denial-of-service by sending a crafted query with binary fan-out fragment spreads. A single unauthenticated request can block the Node.js event loop for seconds, denying service to all concurrent users. This only affects deployments that have enabled the requestComplexity.graphQLDepth or requestComplexity.graphQLFields configuration options. This issue has been patched in versions 8.6.68 and 9.7.0-alpha.12.

CVSS Metrics

Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Confidentiality: undefined
Integrity: undefined
Availability: undefined
Weaknesses: CWE-407

Metadata

Primary Vendor: PARSEPLATFORM
Published: 3/31/2026
Last Modified: 4/2/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

parseplatform : parse-serverparseplatform : parse-serverparseplatform : parse-serverparseplatform : parse-serverparseplatform : parse-serverparseplatform : parse-serverparseplatform : parse-serverparseplatform : parse-serverparseplatform : parse-serverparseplatform : parse-serverparseplatform : parse-serverparseplatform : parse-serverparseplatform : parse-server

Remediation Guidance

Executive Summary

Cite this page

CVE-2026-34573. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2026-34573

View on NIST NVD

CVE-2026-34573 vulnerability