Is CVE-2026-33508 actively exploited?

CVE-2026-33508 has no public evidence of in-the-wild exploitation as of 2026-03-25.

What is the CVSS score for CVE-2026-33508?

CVE-2026-33508 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-2026-33508?

Patch guidance is available from parseplatform security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2026-33508.

Fix CVE-2026-33508 - HIGH parseplatform parse-server

Q: Which products are affected by CVE-2026-33508?

46 products: parseplatform parse-server, parseplatform parse-server, parseplatform parse-server, parseplatform parse-server, parseplatform parse-server, and 41 more.

Description

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.56 and 9.6.0-alpha.45, Parse Server's LiveQuery component does not enforce the requestComplexity.queryDepth configuration setting when processing WebSocket subscription requests. An attacker can send a subscription with deeply nested logical operators, causing excessive recursion and CPU consumption that degrades or disrupts service availability. This issue has been patched in versions 8.6.56 and 9.6.0-alpha.45.

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-674

Metadata

Primary Vendor: PARSEPLATFORM
Published: 3/24/2026
Last Modified: 3/25/2026
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-serverparseplatform : 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-serverparseplatform : 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-serverparseplatform : parse-serverparseplatform : parse-serverparseplatform : parse-serverparseplatform : parse-serverparseplatform : parse-serverparseplatform : parse-serverparseplatform : parse-server

Remediation Guidance

Executive Summary

View on NIST NVD