SurrealDB versions before 3.1.0 fail to apply the SURREAL_WEBSOCKET_MAX_MESSAGE_SIZE limit to anonymous /sql WebSocket connections, allowing attackers to buffer unbounded frames in the per-connection read buffer. Attackers can stream WebSocket frames larger than the configured limit across multiple concurrent connections to consume excessive memory and degrade /sql availability.
Metrics
Affected Vendors & Products
References
History
Tue, 21 Jul 2026 15:30:00 +0000
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ssvc
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Mon, 20 Jul 2026 12:15:00 +0000
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| Description | SurrealDB versions before 3.1.0 fail to apply the SURREAL_WEBSOCKET_MAX_MESSAGE_SIZE limit to anonymous /sql WebSocket connections, allowing attackers to buffer unbounded frames in the per-connection read buffer. Attackers can stream WebSocket frames larger than the configured limit across multiple concurrent connections to consume excessive memory and degrade /sql availability. | |
| Title | SurrealDB before 3.1.0 Memory Amplification via /sql WebSocket | |
| Weaknesses | CWE-770 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-07-21T15:08:19.210Z
Reserved: 2026-07-18T12:26:19.867Z
Link: CVE-2026-63750
Updated: 2026-07-21T15:08:12.362Z
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OpenCVE Enrichment
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