CVE-2026-59287: Spring for GraphQL WebSocket Client Denial of Service

Severity: medium (CVSS 5.9 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-27 · updated 2026-09-02
Weakness: CWE-770

Description

Spring for GraphQL is vulnerable to Denial of Service attacks when using the WebSocket client with keepAlive enabled. Spring for GraphQL 2.0.0 - 2.0.4 Spring for GraphQL 1.4.0 - 1.4.6 Spring for GraphQL 1.3.0 - 1.3.9

Affected products

Spring for GraphQL: from 1.3.0 before 1.3.10; from 1.4.0 before 1.4.7; from 2.0.0 before 2.0.4.1 — fixed in 1.3.10, 1.4.7, 2.0.4.1
Spring for GraphQL: from 2.0.0 through 2.0.4; from 1.4.0 through 1.4.6; from 1.3.0 through 1.3.9

How to fix

Upgrade to a fixed version: Spring for GraphQL 1.3.10, 1.4.7, 2.0.4.1. Check the vendor advisory for mitigations.

References

https://spring.io/security/cve-2026-59287

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