Server-Side Request Forgery in SurrealDB by SurrealDB
CVE-2026-121421

5.3MEDIUM

Key Information:

Vendor

Surrealdb

Status
Surrealdb
Vendor
CVE Published:
3 November 2026

What is CVE-2026-121421?

SurrealDB versions 3.1.0 to 3.2.x are susceptible to a server-side request forgery (SSRF) vulnerability. This flaw exists due to improper handling of port-specific --deny-net rules in network-capability matching. Authenticated users can exploit this weakness by executing HTTP functions with a hostname that resolves to a denied IP or an IP corresponding to a restricted hostname, thereby gaining access to blocked internal services. This oversight undermines network security and could lead to unauthorized data access.

Affected Version(s)

surrealdb 3.1.0 < 3.3.0

surrealdb 3.3.0

References

https://github.com/surrealdb/surrealdb/security/advisorie...
vendor-advisory
https://github.com/surrealdb/surrealdb/commit/9d9a5b0693e...
patch
https://www.vulncheck.com/advisories/surrealdb-3.1.0-befo...
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

alimony
.