CVE-2026-63741: SurrealDB versions before 3.1.0 fail to validate DEFINE NAMESPACE or DEFINE DATABASE permissions when processi

Q: How do I fix CVE-2026-63741?

surrealdb: upgrade to 3.1.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-63741 being exploited?

CVE-2026-63741 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-63741 affect?

CVE-2026-63741 affects surrealdb. Severity is medium (CVSS 6.5). SurrealDB versions before 3.1.0 fail to validate DEFINE NAMESPACE or DEFINE DATABASE permissions when processing USE NS and USE DB statements. Unauthenticated attackers can create arbitrary namespaces and databases by issuing USE commands,

Q: How urgent is CVE-2026-63741?

Priority 35/100. Remotely exploitable, no login, no user action

Routine

MEDIUM 6.5REMOTEUPGRADE

CVE-2026-63741 is a medium-severity flaw (CVSS 6.5) affecting surrealdb. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

SurrealDB versions before 3.1.0 fail to validate DEFINE NAMESPACE or DEFINE DATABASE permissions when processing USE NS and USE DB statements. Unauthenticated attackers can create arbitrary namespaces and databases by issuing USE commands, bypassing authorization checks in the RPC use method and SurrealQL executor.

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 69%)
CISA exploited list	No
Weakness	CWE-862
Published	2026-07-20
Last modified	2026-07-23

Publisher (CNA): VulnCheck · Vendor: surrealdb

Last updated 2026-07-23 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-20 12:19 UTCPublished CVE record published
2026-07-23 20:17 UTCUpdated Record last modified

surrealdb surrealdb UPGRADE

Affected: < 3.1.0

Fixed in: 3.1.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy surrealdb || rpm -q surrealdb || surrealdb --version

2. UPGRADE to 3.1.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade surrealdb

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade surrealdb

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-63741?

surrealdb: upgrade to 3.1.0. Exact commands for each OS are on this page.

Is CVE-2026-63741 being exploited?

CVE-2026-63741 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-63741 affect?

CVE-2026-63741 affects surrealdb. Severity is medium (CVSS 6.5). SurrealDB versions before 3.1.0 fail to validate DEFINE NAMESPACE or DEFINE DATABASE permissions when processing USE NS and USE DB statements. Unauthenticated attackers can create arbitrary namespaces and databases by issuing USE commands,

How urgent is CVE-2026-63741?

Priority 35/100. Remotely exploitable, no login, no user action

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CVE-2026-63745 MEDIUM 5.4 UPGRADE SurrealDB versions before 3.1.0 contain an authorization bypass vulnerability where authenticated users can sp
CVE-2025-71390 HIGH 8.8 UPGRADE SurrealDB before 2.2.6, 2.3.6, and 2.1.8 (and 3.0.0-alpha.7 and earlier) fails to validate DNS-resolved hostna

References

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