CVE-2026-109339

CVSS 6.9 (medium) · published 2026-10-12

SurrealDB 3.1.0 before 3.3.0 lets Surrealism modules exhaust server memory because module stdout/stderr lines are buffered unbounded in host memory, bypassing the configured module memory limit. An attacker can run an Owner-installed malicious module that writes output without newlines, crashing the server and denying service to all namespaces and databases.

Weakness: CWE-770

Source: NVD CVE-2026-109339

References

• https://github.com/surrealdb/surrealdb/security/advisories/GHSA-jj89-wvrw-c4gp
• https://www.vulncheck.com/advisories/surrealdb-3.1.0-before-3.3.0-memory-exhaustion-via-surrealism-module-output-buffering

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