CVE-2026-63756

HIGHPre-NVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

Score 8.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-20. the CNA's CVSS baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
Trending — 3 sources updated this week
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.1Exploit: None knownExposed: 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 contain a time-of-check/time-of-use race condition in the HTTP /rpc endpoint that allows unauthenticated requests to inherit authenticated session state. Unauthenticated attackers can send concurrent requests to the /rpc endpoint while legitimate authenticated traffic is active to execute operations with hijacked user privileges.

CVSS v3
8.1
EG Score
8.1(medium)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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
Severity81% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
30%
KEV
Not listed

Published

July 20, 2026

Last Modified

July 28, 2026

Advisory Details (2)

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

SurrealDB before 3.1.0 Privilege Escalation via RPC Session Race Condition | Advisories | VulnCheck

https://www.vulncheck.com/advisories/surrealdb-before-privilege-escalation-via-rpc-session-race-condition
github Patch Available

HTTP RPC Session Race Condition Allows Privilege Escalation · Advisory · surrealdb/surrealdb · GitHub

https://github.com/surrealdb/surrealdb/security/advisories/GHSA-4vgr-h27g-cf9p

Vendor Advisories for CVE-2026-63756(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 17× in last 7d / 84× 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.

Showing the most recent 100 of 173 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-63756?
CVE-2026-63756 is a high vulnerability published on July 20, 2026. SurrealDB versions before 3.1.0 contain a time-of-check/time-of-use race condition in the HTTP /rpc endpoint that allows unauthenticated requests to inherit authenticated session state. Unauthenticated attackers can send concurrent requests to the /rpc endpoint while legitimate authenticated…
When was CVE-2026-63756 disclosed?
CVE-2026-63756 was first published in the National Vulnerability Database on July 20, 2026, with the most recent update on July 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-63756 actively exploited?
CVE-2026-63756 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 69.9% of all scored CVEs.
What is the CVSS score of CVE-2026-63756?
CVE-2026-63756 has a CVSS v4.0 base score of 8.1 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-63756?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-63756, 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.

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