SurrealDB 3.1.0 before 3.3.0 contains a server-side request forgery vulnerability in network-capability matching because port-specific --deny-net rules (HOST:PORT or IP:PORT) match only a literal host string, while the resolved-IP check discards the port. Authenticated users can call http::* functions with a hostname resolving to a denied IP, or the IP of a denied hostname, to reach blocked internal services.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact Low

Subsequent System Integrity Impact Low

Subsequent System Availability Impact Low

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
surrealdb surrealdb unaffected
Version Status Constraints
3.1.0 affected < 3.3.0
3.3.0 unaffected —

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Project Subscriptions

Vendors Products
Surrealdb Subscribe
Surrealdb Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/surrealdb/surrealdb/commit/9d9a5b0693e499e0d030cac6b618062ec02cd2bc cve-icon
https://github.com/surrealdb/surrealdb/security/advisories/GHSA-mhv5-88p6-w4c3 cve-icon
https://www.vulncheck.com/advisories/surrealdb-3.1.0-before-3.3.0-ssrf-via-port-specific-deny-net-host-aliasing-bypass cve-icon
History

Tue, 03 Nov 2026 14:45:00 +0000

Type Values Removed Values Added
Description SurrealDB 3.1.0 before 3.3.0 contains a server-side request forgery vulnerability in network-capability matching because port-specific --deny-net rules (HOST:PORT or IP:PORT) match only a literal host string, while the resolved-IP check discards the port. Authenticated users can call http::* functions with a hostname resolving to a denied IP, or the IP of a denied hostname, to reach blocked internal services.
Title SurrealDB 3.1.0 before 3.3.0 SSRF via Port-Specific --deny-net Host Aliasing Bypass
First Time appeared Surrealdb
Surrealdb surrealdb
Weaknesses CWE-918
CPEs cpe:2.3:a:surrealdb:surrealdb:*:*:*:*:*:*:*:*
Vendors & Products Surrealdb
Surrealdb surrealdb
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N'}

cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-11-03T14:28:18.001Z

Reserved: 2026-11-03T12:29:41.359Z

Link: CVE-2026-121421

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses