CVE-2026-63734

MEDIUMPre-NVD 4.94.9
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 4.9 from GitHub Security Advisory published 2026-07-20. The CNA's CVSS baseline 4.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: the CNA's CVSS, EPSS, GitHub Security Advisory
4.9EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 4.9Exploit: None knownExposed services: Not assessed

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

The CVE record's CNA (VulnCheck) lists surrealdb versions before 3.2.0 as affected, and surrealdb versions 3.2.0 as unaffected. No release containing a fix is confirmed on record.

SurrealDB versions before 3.2.0 contain a denial of service vulnerability in the SurrealML header parser that allows authenticated Owner-role users to crash the server by uploading a malformed .surml file to the /ml/import endpoint. Attackers can supply non-numeric input-dimensions or other malformed header fields that trigger unchecked unwrap calls, causing a panic that aborts the entire server process and denies service to all databases.

CVSS v3
4.9
EG Score
4.9MEDIUMmedium confidence
EG Risk
22
EG Risk 22/100

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 (value × EchelonGraph’s weight)
Severity49% × 45%
The EG Score, 4.9 of 10.
Exploitation0.5% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.5%
EPSS %ILE
39th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

July 20, 2026

Last Modified

July 28, 2026

Advisory Details (2)

Auto-updated Jul 20, 2026
No fix on record yet. Sources: github.
Web page

SurrealDB before 3.2.0 Denial of Service via malformed SurrealML import | Advisories | VulnCheck

https://www.vulncheck.com/advisories/surrealdb-before-denial-of-service-via-malformed-surrealml-import
GitHub advisoryMentions a patch (unverified)

Denial of Service via malformed SurrealML model import · Advisory · surrealdb/surrealdb · GitHub

https://github.com/surrealdb/surrealdb/security/advisories/GHSA-jwr6-6444-28xv

Vendor Advisories for CVE-2026-63734(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 11× in last 7d / 39× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 177 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 77 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  2. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  3. 2026-10-12 15:48 UTCEG score recompute
  4. 2026-10-11 19:33 UTCEG score recompute
  5. 2026-10-11 16:48 UTCEG score recompute
  6. 2026-10-11 14:10 UTCEG score recompute
  7. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  8. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  9. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  10. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  11. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  12. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  13. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  14. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  15. 2026-10-04 14:58 UTCEG score recompute
  16. 2026-10-04 14:58 UTCGHSA enrichmentGHSA-vm8f-3v3v-fhw4 · GitHub CVSS 4.9
  17. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  18. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  19. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  20. 2026-10-01 07:50 UTCEG score recompute
  21. 2026-10-01 07:50 UTCGHSA enrichmentGHSA-vm8f-3v3v-fhw4 · GitHub CVSS 4.9
  22. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  23. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  24. 2026-09-28 06:27 UTCEG score recompute
  25. 2026-09-28 06:27 UTCGHSA enrichmentGHSA-vm8f-3v3v-fhw4 · GitHub CVSS 4.9
Show 75 more
  1. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  2. 2026-09-24 04:11 UTCEG score recompute
  3. 2026-09-24 04:11 UTCGHSA enrichmentGHSA-vm8f-3v3v-fhw4 · GitHub CVSS 4.9
  4. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  5. 2026-09-23 01:44 UTCEG score recompute
  6. 2026-09-23 01:44 UTCGHSA enrichmentGHSA-vm8f-3v3v-fhw4 · GitHub CVSS 4.9
  7. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  8. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  9. 2026-09-18 03:59 UTCEG score recompute
  10. 2026-09-18 03:59 UTCGHSA enrichmentGHSA-vm8f-3v3v-fhw4 · GitHub CVSS 4.9
  11. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  12. 2026-09-16 12:49 UTCEG score recompute
  13. 2026-09-16 12:49 UTCGHSA enrichmentGHSA-vm8f-3v3v-fhw4 · GitHub CVSS 4.9
  14. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  15. 2026-09-13 16:02 UTCEG score recompute
  16. 2026-09-13 16:02 UTCGHSA enrichmentGHSA-vm8f-3v3v-fhw4 · GitHub CVSS 4.9
  17. 2026-09-12 12:34 UTCEG score recompute
  18. 2026-09-12 12:34 UTCGHSA enrichmentGHSA-vm8f-3v3v-fhw4 · GitHub CVSS 4.9
  19. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  20. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  21. 2026-09-11 09:33 UTCEG score recompute
  22. 2026-09-11 09:33 UTCGHSA enrichmentGHSA-vm8f-3v3v-fhw4 · GitHub CVSS 4.9
  23. 2026-09-09 12:11 UTCEG score recompute
  24. 2026-09-09 12:11 UTCGHSA enrichmentGHSA-vm8f-3v3v-fhw4 · GitHub CVSS 4.9
  25. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  26. 2026-09-07 23:00 UTCEG score recompute
  27. 2026-09-07 23:00 UTCGHSA enrichmentGHSA-vm8f-3v3v-fhw4 · GitHub CVSS 4.9
  28. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  29. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  30. 2026-09-06 11:51 UTCEG score recompute
  31. 2026-09-06 11:51 UTCGHSA enrichmentGHSA-vm8f-3v3v-fhw4 · GitHub CVSS 4.9
  32. 2026-09-05 15:31 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  33. 2026-09-05 09:37 UTCEG score recompute
  34. 2026-09-05 09:37 UTCGHSA enrichmentGHSA-vm8f-3v3v-fhw4 · GitHub CVSS 4.9
  35. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  36. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  37. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  38. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  39. 2026-08-31 04:45 UTCEG score recompute
  40. 2026-08-31 04:45 UTCGHSA enrichmentGHSA-vm8f-3v3v-fhw4 · GitHub CVSS 4.9
  41. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  42. 2026-08-30 02:41 UTCEG score recompute
  43. 2026-08-30 02:41 UTCGHSA enrichmentGHSA-vm8f-3v3v-fhw4 · GitHub CVSS 4.9
  44. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  45. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  46. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  47. 2026-08-27 13:59 UTCEG score recompute
  48. 2026-08-27 13:59 UTCGHSA enrichmentGHSA-vm8f-3v3v-fhw4 · GitHub CVSS 4.9
  49. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  50. 2026-08-26 11:54 UTCEG score recompute
  51. 2026-08-26 11:54 UTCGHSA enrichmentGHSA-vm8f-3v3v-fhw4 · GitHub CVSS 4.9
  52. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  53. 2026-08-25 09:50 UTCEG score recompute
  54. 2026-08-25 09:50 UTCGHSA enrichmentGHSA-vm8f-3v3v-fhw4 · GitHub CVSS 4.9
  55. 2026-08-24 07:44 UTCGHSA enrichmentGHSA-vm8f-3v3v-fhw4 · GitHub CVSS 4.9
  56. 2026-08-23 05:09 UTCEG score recompute
  57. 2026-08-23 05:09 UTCGHSA enrichmentGHSA-vm8f-3v3v-fhw4 · GitHub CVSS 4.9
  58. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  59. 2026-08-22 03:05 UTCEG score recompute
  60. 2026-08-22 03:05 UTCGHSA enrichmentGHSA-vm8f-3v3v-fhw4 · GitHub CVSS 4.9
  61. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  62. 2026-08-21 00:58 UTCEG score recompute
  63. 2026-08-21 00:58 UTCGHSA enrichmentGHSA-vm8f-3v3v-fhw4 · GitHub CVSS 4.9
  64. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  65. 2026-08-19 22:54 UTCEG score recompute
  66. 2026-08-19 22:54 UTCGHSA enrichmentGHSA-vm8f-3v3v-fhw4 · GitHub CVSS 4.9
  67. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  68. 2026-08-18 19:37 UTCEG score recompute
  69. 2026-08-18 19:37 UTCGHSA enrichmentGHSA-vm8f-3v3v-fhw4 · GitHub CVSS 4.9
  70. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  71. 2026-08-17 17:06 UTCEG score recompute
  72. 2026-08-17 17:06 UTCGHSA enrichmentGHSA-vm8f-3v3v-fhw4 · GitHub CVSS 4.9
  73. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  74. 2026-08-16 15:01 UTCEG score recompute
  75. 2026-08-16 15:01 UTCGHSA enrichmentGHSA-vm8f-3v3v-fhw4 · GitHub CVSS 4.9

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Frequently asked(5)

What is CVE-2026-63734?
CVE-2026-63734 is a medium-severity vulnerability; its CVE record was published on July 20, 2026. SurrealDB versions before 3.2.0 contain a denial of service vulnerability in the SurrealML header parser that allows authenticated Owner-role users to crash the server by uploading a malformed .surml file to the /ml/import endpoint. Attackers can supply non-numeric input-dimensions or other…
When was CVE-2026-63734 made public?
CVE-2026-63734 was made public on July 2, 2026: that is the date its CVE record's CNA, VulnCheck, gives for when the vulnerability was made public. The CVE record itself was published on July 20, 2026. EchelonGraph's copy of the record carries a last-modified date of July 28, 2026; the record at its source may have been updated since.
Is CVE-2026-63734 actively exploited?
CVE-2026-63734 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (39th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-63734?
CVE-2026-63734 has a CVSS base score of 4.9 (the CNA's own assessment, by vulncheck; NVD's own analysis pending).
How do I remediate CVE-2026-63734?
No fix for CVE-2026-63734 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The CVE record's CNA (VulnCheck) lists surrealdb versions before 3.2.0 as affected, and surrealdb versions 3.2.0 as unaffected. No release containing a fix is confirmed on record. The vendor advisories EchelonGraph has for CVE-2026-63734 are linked in the Vendor Advisories panel on this page.

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