TI-2026-71154 Aliases CVE-2026-109338 GHSA-5834-qg2f-g3j7

Uncaught exception in SurrealDB lets users crash the server via headers

LOW 31CWE-248Published 2026-10-12 · Updated 2026-10-13

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-248.

Summary

SurrealDB before 3.3.0 contains a denial of service flaw where an uncaught exception lets query-capable users crash the server. Attackers with scripting enabled can read non-ASCII header values in embedded JavaScript, such as through the Headers get() or entries() methods or fetch() endpoints, which aborts the server process. An attacker needs low privileges and network access, and the attack requires no user interaction.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

SurrealDB before 3.3.0 contains a denial of service vulnerability that allows query-capable users to crash the server by reading non-ASCII header values in embedded JavaScript. Attackers with scripting enabled can read such values via Headers get(), entries(), values(), or getSetCookie(), or return them from fetch() endpoints, aborting the server process.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00307 23rd percentileScored 2026-11-07

Fix Fixed surrealdb (surrealdb): 3.3.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
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	before 3.3.0	3.3.0	Patch available	CNA

surrealdb Vendorsurrealdb Affected 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 or later, which fixes the issue.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

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 · 2026-10-12
surrealdb 3.3.0
11 records Highest priority Priority LOW 11 LOW
Other records, highest priority first
- TI-2026-71159 Cross-tenant access in SurrealDB through the USE statementPriority LOW 39
- TI-2026-71150 Cross-tenant access in SurrealDB through namespace and database selectionPriority LOW 37
- TI-2026-71157 Field permission bypass in SurrealDB via PATCH copy and movePriority LOW 31
Show all 11 records →

Timeline

2026-10-12 Threatist record created from CVE-2026-109338
2026-10-12 Alias added: GHSA-5834-qg2f-g3j7
2026-10-13 Priority changed: MEDIUM → LOW
2026-10-13 CISA SSVC decision points changed

References

Advisory 1

GitHub Security Advisory (GHSA-84w9-87hm-mxqx)

TI-2026-84300 SurrealDB index planner lets users infer restricted fields CVSS 4.0MEDIUM 5.3
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

See all 76 →

Sources

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