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CVE-2026-102876 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

Description

SurrealDB before 3.3.0 contains an authorization bypass in HTTP session construction where check_auth() verifies credentials against Surreal-Auth-NS and Surreal-Auth-DB headers but constructs sessions using Surreal-NS and Surreal-DB headers without validating access permissions. Attackers can authenticate as a user from one tenant while selecting another tenant's namespace and database to read, create, and modify records across tenant boundaries.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:7.1 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N

CNA: [email protected]CVSS-B:8.1 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/surrealdb/surrealdb	[email protected]	Vendor
https://github.com/surrealdb/surrealdb/blob/v3.2.4/surrealdb/server/src/ntw/auth.rs	[email protected]	Source CodeVendor
https://github.com/surrealdb/surrealdb/commit/5000e233b4a8b96689c82715c172061dcf711d31	[email protected]	Source CodeVendor
https://github.com/surrealdb/surrealdb/releases/tag/v3.3.0	[email protected]	Release NotesVendor
https://github.com/surrealdb/surrealdb/security/advisories/GHSA-vx2p-7hhm-wv62	[email protected]	AdvisoryBundleRemedyVendor
https://www.vulncheck.com/advisories/surrealdb-before-3.3.0-cross-tenant-access-via-headers	[email protected]	AdvisoryBundle

see all 6 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-639	Authorization Bypass Through User-Controlled Key	[email protected]

Affected Products

Product	Versions
SurrealDB	< 3.3.0 (semver)
CPE No CPEs found in CPE dictionary for this product. Remediation Upgrade: 3.3.0moderate effort Workaround:moderate effort On shared instances, use separate deployments instead of namespace/database boundaries to isolate tenants. Until you upgrade, issue namespace-, database-, and record-level credentials only to parties trusted with every tenant on the instance. Mitigation:moderate effort Prefer a `PERMISSIONS WHERE` clause that checks the caller's identity, such as `$auth` or a token claim, over `PERMISSIONS FULL`. This reduces exposure but does not restore the boundary.

Product

Versions

SurrealDB

< 3.3.0 (semver)

CPE

No CPEs found in CPE dictionary for this product.

Remediation

Upgrade: 3.3.0moderate effort
Workaround:moderate effort
On shared instances, use separate deployments instead of namespace/database boundaries to isolate tenants. Until you upgrade, issue namespace-, database-, and record-level credentials only to parties trusted with every tenant on the instance.
Mitigation:moderate effort
Prefer a `PERMISSIONS WHERE` clause that checks the caller's identity, such as `$auth` or a token claim, over `PERMISSIONS FULL`. This reduces exposure but does not restore the boundary.

Change History

1 change record found show changes