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CVE-2026-121421VulnerabilityPublished

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

Source GCVE Database

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Authoritative record:CVE-2026-121421· Medium 5.3

Not known to be exploited · CVSS 5.3 Medium : upgrade to 3.3.0 when convenient.

Data as of 3 Nov 2026, 16:29 UTC

CVSS 4.0 base score
5.3Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (VulnCheck)CVSS 4.05.3
CNA (VulnCheck)CVSS 3.14.3
Patch
Available – fixed in 3.3.0
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

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 3 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 3 Nov 2026.

What to do

Upgrade surrealdb to 3.3.0.

Affected software

ProductAffectedFixed in
surrealdbsurrealdbAffected
  • >=3.1.0 <3.3.0
Fixed in
  • 3.3.0
crates.iosurrealdbpkg:cargo/surrealdbOther threatsAffected
  • >=3.1.0 <3.3.0
Fixed in
  • 3.3.0

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

The vulnerability affects SurrealDB versions before 3.3.0. Users should upgrade to version 3.3.0 or later where this issue is fixed. No other mitigation steps are indicated.

Description

SurrealDB versions 3.1.0 up to but not including 3.3.0 contain a server-side request forgery (SSRF) vulnerability in the network-capability matching logic. The issue arises because port-specific deny-net rules match only literal host strings, while the resolved IP check ignores the port, allowing authenticated users to bypass restrictions and access blocked internal services via crafted http::* function calls.

References

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