CVE-2026-63735Network attack vector

Cross-tenant API access via unchecked session scope

Published Jul 20, 2026 · Updated Jul 20, 2026

Authorization bypass in SurrealDB before 3.2.0 allows remote authenticated users to access other tenants' custom API endpoints. The /api/{namespace}/{database}/{endpoint} route and api::invoke() replace the caller's session scope from URL, header, or USE values before resolving an endpoint, without verifying that the authenticated scope covers the target. Valid credentials for any namespace or database are required; a Viewer can read endpoint-returned data or trigger handler writes and side effects, while single-tenant deployments are unaffected.

CVSS severity8.1
High
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in SurrealDB before 3.2.0 allows remote authenticated users to access other tenants' custom API endpoints. The /api/{namespace}/{database}/{endpoint} route and api::invoke() replace the caller's session scope from URL, header, or USE values before resolving an endpoint, without verifying that the authenticated scope covers the target. Valid credentials for any namespace or database are required; a Viewer can read endpoint-returned data or trigger handler writes and side effects, while single-tenant deployments are unaffected.

The record

CVE
CVE-2026-63735
Published
Jul 20, 2026
Updated
Jul 20, 2026
Vendor
SurrealDB
Product
SurrealDB
Classifications
CWE-639, CWE-862, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 20, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <3.2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

SurrealDB · SurrealDBversion=0 <3.2.0

Published CVSS scores

8.1SurrealDB GitHub Security AdvisoryCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
8.6VulnCheck CNACVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
CWE-862Missing Authorization
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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