TI-2026-84300 Aliases CVE-2026-121418 GHSA-8x38-ppf2-349c

SurrealDB index planner lets users infer restricted fields

MEDIUM 57CWE-863Published 2026-11-03 · Updated 2026-11-07

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Security bypass
Confidentiality · integrity · availability: Low · None · None
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-863.

Summary

SurrealDB from 3.1.0 before 3.3.0 contains an incorrect authorization flaw (CWE-863) because the streaming planner uses indexes on fields that have restrictive SELECT permissions. A remote attacker with low privileges and a record user account can run full-text MATCHES, compound B-tree, or HNSW KNN queries against restricted fields to infer restricted field values, such as which records contain a guessed value or which vectors are nearest.

Written with Claude Haiku 5.5 from the sources below · 2026-11-07

Description from the CNA

SurrealDB from 3.1.0 before 3.3.0 contains an incorrect authorization vulnerability that allows record users to infer restricted field values because the streaming planner uses indexes on fields with restrictive SELECT permissions. Attackers can issue full-text MATCHES, compound B-tree, or HNSW KNN queries against restricted fields to learn which records contain guessed values or nearest vectors.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00204 10th percentileScored 2026-11-07

Fix Fixed surrealdb (surrealdb): 3.3.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
surrealdb	surrealdb	3.1.0 to before 3.3.0	3.3.0	Patch available	CNA

surrealdb Vendorsurrealdb Affected 3.1.0 to before 3.3.0 Fixed in 3.3.0 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:surrealdb:surrealdb::::::::	—	—	surrealdb

cpe:2.3:a:surrealdb:surrealdb:*:*:*:*:*:*:*:* Versions — — ·surrealdb

Remediation

Upgrade SurrealDB to version 3.3.0, which fixes the flaw. The sources list no fixed version for SurrealDB versions earlier than 3.1.0.

Written with Claude Haiku 5.5 from the sources below · 2026-11-07

Fix · CNA surrealdb (surrealdb) Fixed in 3.3.0

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Release · 2026-11-03
surrealdb 3.3.0
7 records Highest priority Priority MEDIUM 2 MEDIUM, 5 LOW
Other records, highest priority first
- TI-2026-84304 Server-side request forgery in SurrealDB via JWKS URL default portsPriority MEDIUM 56
- TI-2026-84301 MCP session hijack in SurrealDB via shared BoundSubject fingerprintPriority LOW 37
- TI-2026-84299 Use-after-free in SurrealDB KV backends via affinitypool spawn_localPriority LOW 37
Show all 7 records →

Timeline

2026-11-03 Threatist record created from CVE-2026-121418
2026-11-03 Alias added: GHSA-8x38-ppf2-349c
2026-11-07 CISA SSVC decision points changed
2026-11-07 Priority changed: LOW → MEDIUM

References

Advisory 1

GitHub Security Advisory (GHSA-x6mm-9295-rvph)

TI-2026-84304 Server-side request forgery in SurrealDB via JWKS URL default ports CVSS 4.0MEDIUM 5.1
TI-2026-45344 SurrealDB before 3.1.0 Session Hijacking via /rpc sessions CVSS 4.0HIGH 8.7
TI-2024-38452 SurrealDB before 1.1.0 Denial of Service via HTTP Headers CVSS 4.0HIGH 8.7
TI-2026-45347 SurrealDB before 3.1.0 Denial of Service via JSON Parser CVSS 4.0HIGH 8.7
TI-2026-45334 SurrealDB before 3.1.0 Denial of Service via malformed RPC use CVSS 4.0HIGH 8.7
TI-2025-43508 SurrealDB before 2.2.2 SurrealQL Injection via export CVSS 4.0CRITICAL 9.4

See all 76 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences