SurrealDB before 3.3.0 contains a denial of service vulnerability that allows query-capable users to crash the server by reading non-ASCII header… (CVE-2026-109338)
Description
SurrealDB versions prior to 3.3.0 have a denial of service vulnerability that can be triggered by query-capable users reading non-ASCII header values in embedded JavaScript. This can cause the server process to abort when such headers are accessed via certain JavaScript methods or returned from fetch endpoints.
CVSS v3.1
Score 6.5medium
Affected software
pkg:github/surrealdb/surrealdbRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-109338 describes a denial of service vulnerability in SurrealDB before version 3.3.0. The flaw allows users with query capabilities to crash the server by reading non-ASCII header values in embedded JavaScript. Specifically, accessing these headers through methods like Headers get(), entries(), values(), getSetCookie(), or returning them from fetch() endpoints causes the server process to abort, resulting in a denial of service condition.
Potential Impact
An attacker with query privileges can cause the SurrealDB server to crash by exploiting this vulnerability, leading to denial of service. There is no impact on confidentiality or integrity, only availability is affected.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-5834-qg2f-g3j7
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-109338"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Threat ID: 6acd55402cdf04f656da8494
Added to database: 10/12/2026, 21:46:40 UTC
Last enriched: 10/12/2026, 21:52:36 UTC
Last updated: 10/13/2026, 04:08:13 UTC
Views: 4
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