CVE-2026-63743

SurrealDB before 3.1.0 Port-Specific Deny Rule Bypass via HTTP Redirect

MEDIUM
6.4
CVSS Score
Published: July 20, 2026 at 12:04 PM UTC
Updated: July 22, 2026 at 03:57 PM UTC
1 product affected across 1 vendorSurrealdb

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Severity
MEDIUM6.4
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

SurrealDB before 3.1.0 contains a capability bypass vulnerability in HTTP redirect handling that allows authenticated users to circumvent port-scoped --deny-net rules. Attackers can chain an HTTP redirect from an allowed hostname to a denied host:port combination, and the redirect is followed because the port information is dropped during redirect policy evaluation.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 3.1.0
Vendor states this is fixed in 3.1.0 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.4MEDIUMVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-918

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