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CVE-2025-71393 medium CVSS 6.5

Vulnerability in surrealdb (CVE-2025-71393)

Summary

Vulnerability in surrealdb (CVE-2025-71393). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to 2.0.5 or later.

Original description

The description as published by the source.

In order to prevent DoS situations due to infinite recursions, SurrealDB implements a limit of nested calls for both native functions and embedded JavaScript functions.

However, in SurrealDB instances with embedded scripting functions enabled, it was found that this limit can be circumvented by utilizing both at the same time. If a native function contains JavaScript which issues a new query that calls that function, the recursion limit is not triggered.

Once executed, SurrealDB will follow the path of infinite recursions until the system runs out of memory, prior to the recursion limit being triggered.

This vulnerability can only affect SurrealDB servers explicitly enabling the scripting capability with --allow-scripting or
--allow-all and equivalent environment variables SURREAL_CAPS_ALLOW_SCRIPT=true and SURREAL_CAPS_ALLOW_ALL=true.

This issue was discovered and patched during an code audit and penetration test of SurrealDB by cure53, the severity defined within cure53's preliminary finding is Medium, matched by our CVSS v4 assessment.

Impact

For SurrealDB instances with embedded scripting functions enabled, this attack could be used to perform a DoS attack on the server by an authenticated user.

Patches

A patch has been created that further limits scripting function call limit recursion depth and disallows multiple calls to surreadb.query() to run in parallel in a scripting function.

  • Versions 2.0.5, 2.1.5, 2.2.2 and later are not affected by t…

Source: NIST National Vulnerability Database NVD GitHub Advisory

Auto-generated summary

Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.

A vulnerability tracked as CVE-2025-71393 has been found in surrealdb.
Risk of unauthorized operations or information disclosure. CVSS score: 6.5/10.
What to do: upgrade surrealdb to 2.0.5 or later.
If unsure, ask your IT team or search "surrealdb CVE-2025-71393" on the vendor's site.

CVE-2025-71393 (surrealdb) — CWE-674 / CVSS v3 6.5
Attack vector: remote (network-reachable) / no user interaction
Patched: 2.0.5 — apply immediately
Workaround: Deny execution of embedded scripting functions through the configuration of capabilities by starting SurrealDB with the --deny-scripting flag or the equivalent environment v
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.

❓ What is the problem

A vulnerability (CWE-674) exists in surrealdb.

📍 Affected scope

Check the vendor advisory for the affected versions of surrealdb.

🔥 Severity

Severity: Medium (CVSS 6.5/10). Risk of unauthorized operations or information disclosure.

🔧 How to fix

Update to 2.0.5.

🛡️ Workaround

Workaround: Deny execution of embedded scripting functions through the configuration of capabilities by starting SurrealDB with the --deny-scripting flag or the equivalent environment v

🔍 Detection

Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'surrealdb' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.

Response actions

Concrete steps and command examples for SOC/SRE teams to execute in order

  1. 1
    Identify exposure identify 
    grep -r 'surrealdb' . | grep -v node_modules

    リポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で surrealdb を grep し、稼働しているサービス・バージョンを把握する。

  2. 2
    Apply temporary workaround mitigate 
    Deny execution of embedded scripting functions through the configuration of [capabilities](https://surrealdb.com/docs/surrealdb/security/capabilities#capabilities) by starting SurrealDB with the `--deny-scripting` flag or the equivalent environment v

    パッチが適用されるまでの応急処置として、Deny execution of embedded scripting functions through the configuration of capabilities by starting SurrealDB with the --deny-scripting flag or the equivalent environment v を実施。回避策の副作用 (機能低下) を確認した上で。

  3. 3
    Apply patch patch 
    Upgrade surrealdb to 2.0.5

    ステージング環境で 2.0.5 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。

  4. 4
    Post-deployment verification verify 
    Confirm patched version is live in production

    パッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。

Affected packages

crates.io surrealdb
[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.0.5"}]}]

References

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