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    CVE-2026-121420

    SurrealDB from 3.2.0 before 3.3.0 contains a server-side request forgery vulnerability in the FilteringResolver is_private_ip check that fails to unwrap NAT64, 6to4, and Teredo IPv6 addresses. Authenticated users triggering outbound HTTP requests via SurrealQL http functions can use transition addresses embedding private IPv4 targets to reach localhost, internal services, or cloud metadata endpoints.

    Published:Nov 3, 2026
    Last Modified:Nov 3, 2026
    EPS:Nov 3, 2026
    EPSS Score:
    CVSS Score:3.3

    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

    CVE-2026-121423 (CVSS 7.1) — SurrealDB before 3.3.0 contains an unbounded recursion vulnerability that allows authenticated users to abort …
    CVE-2026-121422 (CVSS 5.1) — SurrealDB from 3.1.0 before 3.3.0 contains a server-side request forgery vulnerability that allows database Ow…
    CVE-2026-121421 (CVSS 5.3) — SurrealDB 3.1.0 before 3.3.0 contains a server-side request forgery vulnerability in network-capability matchi…
    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…
    CVE-2026-109341 (CVSS 7.1) — SurrealDB before 3.3.0 contains an authorization bypass vulnerability that allows callers with table-level wri…

    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