CVE-2026-109338 surrealdb CVE debrief

Who should care

Defenders responsible for SurrealDB deployments should assess exposure and prioritize updates to version 3.3.0 or later. This includes operators, platform administrators, vulnerability management teams, and security teams. They should verify SurrealDB version and restrict query capabilities to trusted users. Additionally, they should review compensating controls for exposed systems while remediation is scheduled and verified.

Why it matters

Defenders should prioritize updating SurrealDB to version 3.3.0 or later to mitigate this denial of service vulnerability, which could disrupt service and impact system availability.

• Potential disruption of service due to denial of service vulnerability
• Need to verify SurrealDB version and restrict query capabilities to trusted users
• Possible impact on system availability and user productivity

Technical summary

SurrealDB before version 3.3.0 contains a denial of service vulnerability that allows query-capable users to crash the server by reading non-ASCII header values in embedded JavaScript. This issue affects SurrealDB deployments and defenders should assess exposure and prioritize updates to version 3.3.0 or later. The vulnerability is related to reading non-ASCII header values in embedded JavaScript, which could lead to service disruption and impact system availability. Defenders should verify SurrealDB version and restrict query capabilities to trusted users.

Defensive priority

Defenders should prioritize updating SurrealDB to version 3.3.0 or later to mitigate this vulnerability.

Recommended defensive actions

• Update SurrealDB to version 3.3.0 or later
• Restrict query capabilities to trusted users
• Monitor for potential denial of service attempts
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and source item provide details on the denial of service vulnerability in SurrealDB before version 3.3.0. The vulnerability is related to reading non-ASCII header values in embedded JavaScript. Defenders should verify SurrealDB version and restrict query capabilities to trusted users. The source item provides additional context on the vulnerability, and defenders should review it for further information.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.