CVE-2026-63750

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 84% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
Trending — 5 sources updated this week
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.5Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

SurrealDB versions before 3.1.0 fail to apply the SURREAL_WEBSOCKET_MAX_MESSAGE_SIZE limit to anonymous /sql WebSocket connections, allowing attackers to buffer unbounded frames in the per-connection read buffer. Attackers can stream WebSocket frames larger than the configured limit across multiple concurrent connections to consume excessive memory and degrade /sql availability.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity75% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
20.0%
KEV
Not listed

Published

July 20, 2026

Last Modified

July 22, 2026

Advisory Details (2)

Auto-updated Jul 20, 2026
Patch available. Sources: github.
generic

SurrealDB before 3.1.0 Memory Amplification via /sql WebSocket | Advisories | VulnCheck

https://www.vulncheck.com/advisories/surrealdb-before-memory-amplification-via-sql-websocket
github Patch Available

Pre-auth memory amplification via unbounded `/sql` WebSocket frames · Advisory · surrealdb/surrealdb · GitHub

https://github.com/surrealdb/surrealdb/security/advisories/GHSA-65rj-r9fh-jp2v

Vendor Advisories for CVE-2026-63750(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 16× in last 7d / 16× 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.

  1. 2026-07-24 14:18 UTCEPSS rescore
  2. 2026-07-24 14:18 UTCEPSS rescore
  3. 2026-07-23 14:18 UTCEPSS rescore
  4. 2026-07-23 14:18 UTCEPSS rescore
  5. 2026-07-23 03:22 UTCEG score recompute▲ 2.20
  6. 2026-07-22 23:41 UTCEG score recompute
  7. 2026-07-22 23:41 UTCGHSA enrichment
  8. 2026-07-22 16:51 UTCNVD updateCVSS v3 → 7.5 · severity → HIGH
  9. 2026-07-22 14:08 UTCEPSS rescore
  10. 2026-07-22 14:08 UTCEPSS rescore
  11. 2026-07-21 15:25 UTCEPSS rescore
  12. 2026-07-21 15:25 UTCEPSS rescore
  13. 2026-07-20 12:38 UTCEG score recompute
  14. 2026-07-20 12:38 UTCGHSA enrichment
  15. 2026-07-20 12:18 UTCEG score recompute
  16. 2026-07-20 12:17 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-63750?
CVE-2026-63750 is a high vulnerability published on July 20, 2026. SurrealDB versions before 3.1.0 fail to apply the SURREALWEBSOCKETMAXMESSAGESIZE limit to anonymous /sql WebSocket connections, allowing attackers to buffer unbounded frames in the per-connection read buffer. Attackers can stream WebSocket frames larger than the configured limit across multiple…
When was CVE-2026-63750 disclosed?
CVE-2026-63750 was first published in the National Vulnerability Database on July 20, 2026, with the most recent update on July 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-63750 actively exploited?
CVE-2026-63750 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 20.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-63750?
CVE-2026-63750 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-63750?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-63750, 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

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