SurrealDB before 2.2.2 Denial of Service via /sql endpoint
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 versions before 2.2.2 contain an uncaught exception vulnerability in the net module that allows authenticated users to crash the database. Attackers can send crafted HTTP queries containing null bytes to the /sql endpoint, causing an unhandled exception that crashes the SurrealDB instance and any dependent applications.
Why it matters now
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
Remediation
- Fix · CNA surrealdb (surrealdb) Fixed in 2.2.2
- Fix · CNA surrealdb (surrealdb) Fixed in 2.1.5
- Fix · CNA surrealdb (surrealdb) Fixed in 2.0.5
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
surrealdb 2.1.5, 2.2.2
8 records Highest priority Priority MEDIUM 1 MEDIUM, 7 LOW
Other records, highest priority first
- TI-2025-43508 SurrealDB before 2.2.2 SurrealQL Injection via exportPriority MEDIUM 43
- TI-2025-43513 SurrealDB before 2.2.2 CPU Exhaustion via nested FOR loopsPriority LOW 32
- TI-2025-43511 SurrealDB before 2.2.2 Memory Exhaustion via string::replacePriority LOW 32
- Release ·
surrealdb 2.0.5
7 records Highest priority Priority MEDIUM 1 MEDIUM, 6 LOW
Other records, highest priority first
- TI-2025-43508 SurrealDB before 2.2.2 SurrealQL Injection via exportPriority MEDIUM 43
- TI-2025-43513 SurrealDB before 2.2.2 CPU Exhaustion via nested FOR loopsPriority LOW 32
- TI-2025-43511 SurrealDB before 2.2.2 Memory Exhaustion via string::replacePriority LOW 32
Timeline
- 2026-10-02 Threatist record created from CVE-2025-71391
- 2026-10-03 Alias added: GHSA-x3fg-mm84-q54h
- 2026-10-29 Affected versions changed · CNA
References
More Surrealdb vulnerabilities
- 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
- TI-2026-45343 SurrealDB before 3.1.0 Privilege Escalation via RPC Session Race Condition CVSS 4.0CRITICAL 9.2
Sources
- CVE-2025-71391 · CVE Program
- CVE-2025-71391 · NVD
- FIRST EPSS
- GHSA-x3fg-mm84-q54h · GitHub Advisory Database · CC BY 4.0
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