CVE-2026-63762
SurrealDB before v2.6.1 Denial of Service via scripting
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.
INFO
Published Date :
July 20, 2026, 12:19 p.m.
Last Modified :
July 20, 2026, 12:19 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-63762
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 4.0 | MEDIUM | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Update the rquickjs dependency to v0.11.0.
- Ensure --allow-scripting is disabled if not needed.
- Restrict query execution capabilities.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-63762.
| URL | Resource |
|---|---|
| https://github.com/surrealdb/surrealdb/security/advisories/GHSA-xx7m-69ff-9crp | |
| https://www.vulncheck.com/advisories/surrealdb-before-denial-of-service-via-scripting |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-63762 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-63762
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-63762 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-63762 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
Jul. 20, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'surrealdb', 'product': 'surrealdb', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '2.6.1', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '2.6.1', 'versionType': 'semver'}], 'packageURL': 'pkg:cargo/SurrealDB', 'defaultStatus': 'unaffected'}, {'vendor': 'surrealdb', 'product': 'surrealdb', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '3.0.0-beta.3', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '3.0.0-beta.3', 'versionType': 'semver'}], 'packageURL': 'pkg:cargo/SurrealDB', 'defaultStatus': 'unaffected'}] Added 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. Added CVSS V4.0 AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-476 Added Reference https://github.com/surrealdb/surrealdb/security/advisories/GHSA-xx7m-69ff-9crp Added Reference https://www.vulncheck.com/advisories/surrealdb-before-denial-of-service-via-scripting