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    CVE-2026-121421

    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.

    Published:Nov 3, 2026
    Last Modified:Nov 3, 2026
    EPS:Nov 3, 2026
    EPSS Score:
    CVSS Score:4.3

    Affected Products

    Vendor
    Surrealdb
    Product
    Surrealdb

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-918 Server-Side Request Forgery

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-664 Server Side Request Forgery

    Related CVEs

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    CVE-2026-121420 (CVSS 4.8) — SurrealDB from 3.2.0 before 3.3.0 contains a server-side request forgery vulnerability in the FilteringResolve…
    CVE-2026-121419 (CVSS 8.6) — SurrealDB from 3.1.0 before 3.3.0 contains an improper authentication vulnerability where the MCP BoundSubject…
    CVE-2026-121418 (CVSS 5.3) — SurrealDB from 3.1.0 before 3.3.0 contains an incorrect authorization vulnerability that allows record users t…
    CVE-2026-121417 (CVSS 8.8) — SurrealDB before 3.3.0 contains a use-after-free vulnerability in surrealdb-core KV backends that pass borrowe…
    CVE-2026-121416 (CVSS 7.1) — SurrealDB 2.0.0 before 3.3.1 does not enforce --deny-funcs restrictions on method-style function calls in the …
    CVE-2026-109343 (CVSS 8.6) — SurrealDB before 3.3.0 allows cross-tenant access because the SurrealQL USE statement switches a session to an…
    CVE-2026-109342 (CVSS 5.3) — SurrealDB from 3.0.0 before 3.3.0 contains a missing authentication vulnerability in the revoke RPC method tha…
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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High