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PatchSiren cyber security CVE debrief

CVE-2026-59287 Spring CVE debrief

CVE-2026-59287 is a Denial of Service vulnerability in Spring for GraphQL when using the WebSocket client with keepAlive enabled. Affected versions are Spring for GraphQL 2.0.0 - 2.0.4, 1.4.0 - 1.4.6, and 1.3.0 - 1.3.9. The CVSS score is 5.9, with a severity of MEDIUM. Organizations should review their inventory and apply patches or mitigations to prevent potential Denial of Service attacks. The CVE record was published on 2026-08-27T20:17:54.913Z and has not been modified since then.

Vendor
Spring
Product
Spring for GraphQL
CVSS
MEDIUM 5.9
CISA KEV
Not listed in stored evidence
Original CVE published
2026-08-27
Original CVE updated
2026-09-02
Advisory published
2026-08-27
Advisory updated
2026-09-02

Who should care

Organizations using Spring for GraphQL, particularly those with publicly exposed GraphQL APIs or sensitive data, should review their inventory and apply patches or mitigations to prevent potential Denial of Service attacks. This includes operators managing affected systems, platform administrators, vulnerability management teams, and security teams responsible for ensuring the security and integrity of their systems.

Technical summary

CVE-2026-59287 is a Denial of Service vulnerability in Spring for GraphQL when using the WebSocket client with keepAlive enabled. Affected versions are Spring for GraphQL 2.0.0 - 2.0.4, 1.4.0 - 1.4.6, and 1.3.0 - 1.3.9. The CVSS score is 5.9, with a severity of MEDIUM. This vulnerability can lead to potential Denial of Service attacks, and organizations should review their inventory and apply patches or mitigations.

Defensive priority

Organizations using Spring for GraphQL should review their inventory and apply patches or mitigations to prevent potential Denial of Service attacks.

Recommended defensive actions

  • Review inventory for affected Spring for GraphQL versions
  • Apply patches or updates to vulnerable versions
  • Implement compensating controls to detect and prevent Denial of Service attacks
  • Monitor for suspicious WebSocket client activity
  • Review compensating controls for exposed systems while remediation is scheduled and verified

Evidence notes

The CVE-2026-59287 record indicates that Spring for GraphQL is vulnerable to Denial of Service attacks when using the WebSocket client with keepAlive enabled. Affected versions include Spring for GraphQL 2.0.0 - 2.0.4, 1.4.0 - 1.4.6, and 1.3.0 - 1.3.9. The CVSS score is 5.9, with a severity of MEDIUM.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-59287 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-59287

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

  • CVE-2026-59287 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-59287

    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.