What’s Vulnerable › Vulnerabilities

CVE-2026-90584: TooTallNate Java-WebSocket Fragmentation Draft_6455.java processFrameContinuousAndNonFin allocation of resources

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-13 · updated 2026-09-14
• Weakness: CWE-400

Description

A weakness has been identified in TooTallNate Java-WebSocket up to 1.6.1. The impacted element is the function processFrameContinuousAndNonFin of the file Draft_6455.java of the component Fragmentation Handler. Executing a manipulation can lead to allocation of resources. The attack may be performed from remote. The exploit has been made available to the public and could be used for attacks. The pull request to fix this issue awaits acceptance.

Affected products

• TooTallNate Java-WebSocket: 1.6.0, 1.6.1

References

• https://github.com/TooTallNate/Java-WebSocket/
• https://github.com/TooTallNate/Java-WebSocket/issues/1508
• https://github.com/TooTallNate/Java-WebSocket/pull/1509
• https://vuldb.com/cve/CVE-2026-90584
• https://vuldb.com/submit/913786
• https://vuldb.com/vuln/403169
• https://vuldb.com/vuln/403169/cti

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