Vulnerability · Published Jul 20, 2026 · Assigned by VulnCheck

CVE-2026-63762SurrealDB before v2.6.1 Denial of Service via scripting

Medium 6.0

In plain English

A medium-severity null pointer dereference in surrealdb from surrealdb. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 39% of all known vulnerabilities).

Severity (CVSS 4.0)6.0Medium

Exploit odds (30 days)0.4%top 60.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

SurrealDB before v2.6.1 (and before v3.0.0-beta.3) contains a denial of service vulnerability in its embedded JavaScript scripting engine, which is enabled via the --allow-scripting capability (disabled by default). Any user able to execute arbitrary queries — including unauthenticated guests when --allow-guests is enabled — can use built-in string functions to construct a large string and pass it to the JavaScript runtime for compilation, triggering a null pointer dereference in the underlying QuickJS-NG engine. This causes the server process to terminate immediately without graceful shutdown, requiring a manual restart. The issue was fixed by updating the rquickjs dependency from v0.9.0 to v0.11.0.

Affected products (as reported)

Vendor	Product	Versions
surrealdb	surrealdb	0 – before 2.6.1
surrealdb	surrealdb	0 – before 3.0.0-beta.3

Weakness: CWE-476 · Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

References

GitHub Security Advisory (GHSA-xx7m-69ff-9crp) vendor-advisory
VulnCheck Advisory: SurrealDB before v2.6.1 Denial of Service via scripting third-party-advisory