Is CVE-2026-34373 actively exploited?

CVE-2026-34373 has no public evidence of in-the-wild exploitation as of 2026-04-02.

What is the CVSS score for CVE-2026-34373?

CVE-2026-34373 has a CVSS score of 5.3 (MEDIUM severity). Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/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-2026-34373?

Patch guidance is available from parseplatform security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2026-34373.

CVE-2026-34373 - remediation guidance & executive summary

Q: Which products are affected by CVE-2026-34373?

11 products: parseplatform parse-server, parseplatform parse-server, parseplatform parse-server, parseplatform parse-server, parseplatform parse-server, and 6 more.

Description

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.66 and 9.7.0-alpha.10, the GraphQL API endpoint does not respect the allowOrigin server option and unconditionally allows cross-origin requests from any website. This bypasses origin restrictions that operators configure to control which websites can interact with the Parse Server API. The REST API correctly enforces the configured allowOrigin restriction. This issue has been patched in versions 8.6.66 and 9.7.0-alpha.10.

CVSS Metrics

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/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: passive
Confidentiality: undefined
Integrity: undefined
Availability: undefined
Weaknesses: CWE-346

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-server

Remediation Guidance

Executive Summary

View on NIST NVD