PatchSiren

PatchSiren cyber security CVE debrief

CVE-2026-41700 Spring CVE debrief

CVE-2026-41700 is a HIGH severity vulnerability in Spring for GraphQL applications that have enabled the WebSocket transport, allowing for Cross-Site WebSocket Hijacking. An attacker can trick an authenticated user into visiting a malicious page, allowing the attacker to execute arbitrary GraphQL operations with the victim's credentials. Affected versions include Spring for GraphQL 2.0.0 through 2.0.3; 1.4.0 through 1.4.5; 1.3.0 through 1.3.8; 1.0.0 through 1.0.6.

Vendor
Spring
Product
Spring for GraphQL
CVSS
HIGH 8.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-11
Original CVE updated
2026-06-12
Advisory published
2026-06-11
Advisory updated
2026-06-12

Who should care

Users of Spring for GraphQL applications that have enabled the WebSocket transport should be aware of this vulnerability and take steps to mitigate it.

Technical summary

CVE-2026-41700 is a Cross-Site WebSocket Hijacking vulnerability in Spring for GraphQL applications. The vulnerability has a CVSS score of 8.1 and is considered HIGH severity. The vulnerability is caused by the application's failure to properly validate WebSocket requests, allowing an attacker to hijack the WebSocket connection and execute arbitrary GraphQL operations with the victim's credentials.

Defensive priority

HIGH

Recommended defensive actions

  • Upgrade to a non-vulnerable version of Spring for GraphQL.
  • Disable WebSocket transport if not required.

Evidence notes

The CVE-2026-41700 vulnerability was published on [cve-org](https://www.cve.org/CVERecord?id=CVE-2026-41700) and has a detailed description on [nvd](https://nvd.nist.gov/vuln/detail/CVE-2026-41700).

Official resources

CVE-2026-41700 was published on 2026-06-11T07:16:28.400Z and modified on 2026-06-12T14:13:50.790Z.