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.
CVE-2026-63762
MEDIUMPre-NVD 6.06.0Trending — 4 sources updated this week
EchelonGraph scoreLOW confidence
This medium-severity CVE scores 6.0 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit-prediction score not yet available (the EPSS model rescores nightly; freshly-published CVEs typically appear within 48 hours). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
Triggered by: NVD CVSS baseline
Sources: secondary
6.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.0Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 6.0
- EG Score
- 6.0(low)
- EPSS
- 14.5%
- KEV
- Not listed
Published
July 20, 2026
Last Modified
July 21, 2026
Advisory Details (2)
Auto-updated Jul 20, 2026Patch available. Sources: github.
generic
SurrealDB before v2.6.1 Denial of Service via scripting | Advisories | VulnCheck
https://www.vulncheck.com/advisories/surrealdb-before-denial-of-service-via-scriptinggithub Patch Available
Denial of Service through scripting function memory edge case · Advisory · surrealdb/surrealdb · GitHub
https://github.com/surrealdb/surrealdb/security/advisories/GHSA-xx7m-69ff-9crpVendor Advisories for CVE-2026-63762(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Affected Packages
(1 across 1 ecosystem)
crates.io(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| surrealdb | — | 2.6.1 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 8× in last 7d / 8× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-22 14:08 UTCEPSS rescore
- 2026-07-22 14:08 UTCEPSS rescore
- 2026-07-21 15:25 UTCEPSS rescore
- 2026-07-21 15:25 UTCEPSS rescore
- 2026-07-20 12:37 UTCEG score recompute
- 2026-07-20 12:37 UTCGHSA enrichment
- 2026-07-20 12:18 UTCEG score recompute
- 2026-07-20 12:17 UTCMITRE cvelistV5first tracked
Related CVEs(same CWE)
Frequently asked(5)
What is CVE-2026-63762?
CVE-2026-63762 is a medium vulnerability published on July 20, 2026. 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…
When was CVE-2026-63762 disclosed?
CVE-2026-63762 was first published in the National Vulnerability Database on July 20, 2026, with the most recent update on July 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-63762 actively exploited?
CVE-2026-63762 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 14.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-63762?
CVE-2026-63762 has a CVSS v3 base score of 6.0 (NVD). The EG score is currently aggregating — additional source signals are being incorporated as they become available..
How do I remediate CVE-2026-63762?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-63762, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-63762
Is Your Infrastructure Affected by CVE-2026-63762?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.