{"id":"CVE-2026-109339","state":"PUBLISHED","title":"SurrealDB 3.1.0 before 3.3.0 Memory Exhaustion via Surrealism Module Output Buffering","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.","publishedAt":"2026-10-12T16:05:25.820Z","updatedAt":"2026-10-13T16:53:58.068Z","severity":{"score":6.9,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","source":"VulnCheck"},"assigner":"VulnCheck","products":["surrealdb surrealdb","surrealdb surrealism-runtime"],"affected":[{"vendor":"surrealdb","product":"surrealdb","packageURL":"pkg:cargo/surrealdb","defaultStatus":"unaffected","versions":[{"version":"3.1.0","status":"affected","lessThan":"3.3.0","versionType":"semver"},{"version":"3.3.0","status":"unaffected","versionType":"semver"}]},{"vendor":"surrealdb","product":"surrealism-runtime","packageURL":"pkg:cargo/surrealism-runtime","defaultStatus":"unaffected","versions":[{"version":"0.3.0","status":"affected","lessThan":"0.6.0","versionType":"semver"},{"version":"0.6.0","status":"unaffected","versionType":"semver"}]}],"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"],"weaknesses":["CWE-770"],"ingestedAt":"2026-10-29T20:10:33.477Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/109xxx/CVE-2026-109339.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-109339","state":"PUBLISHED","datePublished":"2026-10-12T16:05:25.820Z","dateUpdated":"2026-10-13T16:53:58.068Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-10-12T14:19:01.653Z"},"containers":{"cna":{"title":"SurrealDB 3.1.0 before 3.3.0 Memory Exhaustion via Surrealism Module Output Buffering","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"surrealdb","product":"surrealdb","packageURL":"pkg:cargo/surrealdb","defaultStatus":"unaffected","versions":[{"version":"3.1.0","status":"affected","lessThan":"3.3.0","versionType":"semver"},{"version":"3.3.0","status":"unaffected","versionType":"semver"}]},{"vendor":"surrealdb","product":"surrealism-runtime","packageURL":"pkg:cargo/surrealism-runtime","defaultStatus":"unaffected","versions":[{"version":"0.3.0","status":"affected","lessThan":"0.6.0","versionType":"semver"},{"version":"0.6.0","status":"unaffected","versionType":"semver"}]}],"references":[{"url":"https://github.com/surrealdb/surrealdb/security/advisories/GHSA-jj89-wvrw-c4gp","tags":["vendor-advisory"],"name":"GitHub Security Advisory (GHSA-jj89-wvrw-c4gp)"},{"url":"https://www.vulncheck.com/advisories/surrealdb-3.1.0-before-3.3.0-memory-exhaustion-via-surrealism-module-output-buffering","name":"VulnCheck Advisory: SurrealDB 3.1.0 before 3.3.0 Memory Exhaustion via Surrealism Module Output Buffering","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"HIGH","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":6.9,"baseSeverity":"MEDIUM"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"HIGH","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":4.9,"baseSeverity":"MEDIUM"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-770","lang":"en","description":"Allocation of Resources Without Limits or Throttling","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-10-12T16:05:25.820Z"},"datePublic":"2026-09-28T00:00:00.000Z","cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:surrealdb:surrealdb:*:*:*:*:*:*:*:*","versionStartIncluding":"3.1.0","versionEndExcluding":"3.3.0"}]}]}],"credits":[{"lang":"en","value":"gigioneggiando","type":"reporter"}],"x_generator":{"engine":"vulncheck-endgame"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-13T15:48:47.960937Z","id":"CVE-2026-109339","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-13T16:53:58.068Z"}}]}}}