SurrealDB up to 2.3.5/2.2.5/2.1.7 Http Hostname access control

Summaryinfo

A vulnerability classified as critical was found in SurrealDB up to 2.3.5/2.2.5/2.1.7. Affected by this vulnerability is an unknown functionality of the component Http. Such manipulation of the argument Hostname leads to access control. This vulnerability is uniquely identified as CVE-2025-71390. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability, which was classified as critical, has been found in SurrealDB up to 2.3.5/2.2.5/2.1.7. Affected by this issue is an unknown function of the component Http. The manipulation of the argument hostname with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. Impacted is confidentiality, integrity, and availability. CVE summarizes:

SurrealDB before 2.2.6, 2.3.6, and 2.1.8 (and 3.0.0-alpha.7 and earlier) fails to validate DNS-resolved hostnames against --deny-net network access restrictions in its http::* functions. An authenticated user can invoke http::<fn>(<url>) with a hostname that resolves to a denied IP address, causing the server to issue the request anyway and return the response. This bypasses network access controls, allowing access to restricted internal endpoints and potentially retrieving or altering sensitive information and credentials, depending on the deployment.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2025-71390 since 07/16/2026. The exploitation is known to be easy. The attack may be launched remotely. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1068.

Upgrading to version 2.3.6 or 2.2.6 eliminates this vulnerability.

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Productinfo

Name

• SurrealDB

Version

• 2.1.0
• 2.1.1
• 2.1.2
• 2.1.3
• 2.1.4
• 2.1.5
• 2.1.6
• 2.1.7
• 2.2.0
• 2.2.1
• 2.2.2
• 2.2.3
• 2.2.4
• 2.2.5
• 2.3.0
• 2.3.1
• 2.3.2
• 2.3.3
• 2.3.4
• 2.3.5

Website

• Product: https://github.com/surrealdb/surrealdb/

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