Is there a public exploit for CVE-2026-121421?

No public exploit for CVE-2026-121421 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-121421?

CVE-2026-121421 scores CVSS 5.3 (v4.0), rated medium.

What does CVE-2026-121421 affect?

CVE-2026-121421 affects surrealdb surrealdb.

5.3 Medium

SurrealDB 3.1.0 before 3.3.0 contains a server-side request forgery vulnerability in network-capability matching because port-specific…

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.

Assessment

CVSS: 5.3 (v4.0)
Severity: Medium
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 3 November 2026
Last updated: 3 November 2026
Affected: surrealdb · surrealdb
Assigner: VulnCheck

CVSS vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L

At the source

EUVD (ENISA)

References

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