Denial of Service Vulnerability in SurrealDB from SurrealDB Inc.
CVE-2026-109338

7.1HIGH

Key Information:

Vendor

Surrealdb

Status
Surrealdb
Vendor
CVE Published:
12 October 2026

What is CVE-2026-109338?

SurrealDB versions prior to 3.3.0 are exposed to a denial of service vulnerability that allows users capable of executing queries to disrupt server operations. This vulnerability arises when embedded JavaScript processes non-ASCII header values. Attackers leveraging this flaw can use functions such as Headers get(), entries(), values(), or getSetCookie() to read these values, or fetch() endpoints to send them, which may lead to server crashes.

Affected Version(s)

surrealdb 0 < 3.3.0

surrealdb 3.3.0

References

https://github.com/surrealdb/surrealdb/security/advisorie...
vendor-advisory
https://www.vulncheck.com/advisories/surrealdb-before-3.3...
third-party-advisory

CVSS V4

Score:
7.1
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

gigioneggiando
.