All vulnerabilities
CVE-2026-109339GHSA-jj89-wvrw-c4gp

SurrealDB 3.1.0 before 3.3.0 Memory Exhaustion via Surrealism Module Output Buffering

surrealdb surrealdb
Open in ThreatlineRecord JSON
CVSS
6.9Medium
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.38%Chance of exploitation activity in the next 30 days, higher than 30% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in3.3.0Also 0.6.0CVE List
Published12 Oct 2026Updated 13 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

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.

Text from CVE List

Affected versions 4

  • surrealdbaffected: 3.1.0 before 3.3.0CVE List
  • surrealdbunaffected: 3.3.0CVE List
  • surrealism-runtimeaffected: 0.3.0 before 0.6.0CVE List
  • surrealism-runtimeunaffected: 0.6.0CVE List

References 2