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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
2026-07-17
Advisory published
2026-06-11
Advisory updated
2026-07-17

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).

Sources and references

Verified primary and authoritative sources

  • CVE-2026-41700 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-41700

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-41700 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-41700

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.