CVE-2026-76647

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-19. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this weekElevated
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.8Exploit: Elevated riskExposed: 0

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

Leantime JSON-RPC API through version 3.9.0 contains a missing authorization vulnerability in the JSON-RPC dispatcher in app/Domain/Api/Controllers/Jsonrpc.php. The dispatcher does not enforce authorization before invoking service-layer methods, allowing an authenticated user to call methods or act on resources outside their intended permissions. For example, the editOwn method accepts a user-supplied user ID without verifying that it belongs to the caller, allowing an attacker to modify another user's account and set a new password, resulting in account takeover. This vulnerability is distinct from CVE-2026-59712 and CVE-2026-15509 because the root cause is the lack of centralized authorization enforcement in the JSON-RPC dispatcher rather than the behavior of an individual exposed method.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
56(Track*)
EG Risk 56/100SSVC: 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
Severity88% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
0%
EPSS %ILE
31%
KEV
Not listed

Published

August 19, 2026

Last Modified

September 8, 2026

Advisory Details (1)

Auto-updated Aug 27, 2026
No patch confirmed yet.
generic

Unlocking Leantime's Power: A Guide to the JSON-RPC API - Leantime

https://leantime.io/unlocking-leantimes-power-a-guide-to-the-json-rpc-api/

Vendor Advisories for CVE-2026-76647(1)

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

Weakness Classification(3)

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

Data Freshness Timeline

(refreshed 23× in last 7d / 97× 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 102 total refreshes for this CVE.

  1. 2026-09-20 20:16 UTCEPSS rescore
  2. 2026-09-20 18:52 UTCGHSA enrichment
  3. 2026-09-20 05:46 UTCGHSA enrichment
  4. 2026-09-19 16:40 UTCEG score recompute
  5. 2026-09-19 16:40 UTCGHSA enrichment
  6. 2026-09-19 03:32 UTCEG score recompute
  7. 2026-09-19 03:32 UTCGHSA enrichment
  8. 2026-09-18 19:28 UTCEPSS rescore
  9. 2026-09-18 14:26 UTCGHSA enrichment
  10. 2026-09-18 01:07 UTCEG score recompute
  11. 2026-09-18 01:07 UTCGHSA enrichment
  12. 2026-09-17 12:01 UTCGHSA enrichment
  13. 2026-09-16 22:55 UTCEG score recompute
  14. 2026-09-16 22:55 UTCGHSA enrichment
  15. 2026-09-16 14:08 UTCEPSS rescore
  16. 2026-09-16 09:49 UTCEG score recompute
  17. 2026-09-16 09:49 UTCGHSA enrichment
  18. 2026-09-16 05:15 UTCEPSS rescore
  19. 2026-09-15 19:23 UTCGHSA enrichment
  20. 2026-09-15 06:17 UTCEG score recompute
  21. 2026-09-15 06:17 UTCGHSA enrichment
  22. 2026-09-15 03:12 UTCEPSS rescore
  23. 2026-09-14 17:09 UTCGHSA enrichment
  24. 2026-09-14 04:03 UTCEG score recompute
  25. 2026-09-14 04:03 UTCGHSA enrichment
Show 75 more
  1. 2026-09-13 14:57 UTCGHSA enrichment
  2. 2026-09-13 01:48 UTCEG score recompute
  3. 2026-09-13 01:48 UTCGHSA enrichment
  4. 2026-09-12 15:02 UTCEPSS rescore
  5. 2026-09-12 12:41 UTCGHSA enrichment
  6. 2026-09-11 23:35 UTCEG score recompute
  7. 2026-09-11 23:35 UTCGHSA enrichment
  8. 2026-09-11 14:53 UTCEPSS rescore
  9. 2026-09-11 09:14 UTCGHSA enrichment
  10. 2026-09-10 20:08 UTCEG score recompute
  11. 2026-09-10 20:07 UTCGHSA enrichment
  12. 2026-09-10 09:35 UTCEPSS rescore
  13. 2026-09-10 06:58 UTCGHSA enrichment
  14. 2026-09-09 17:52 UTCGHSA enrichment
  15. 2026-09-09 04:46 UTCEG score recompute
  16. 2026-09-09 04:46 UTCGHSA enrichment
  17. 2026-09-08 22:01 UTCEPSS rescore
  18. 2026-09-08 15:22 UTCGHSA enrichment
  19. 2026-09-07 22:40 UTCEG score recompute
  20. 2026-09-07 22:40 UTCGHSA enrichment
  21. 2026-09-07 09:34 UTCGHSA enrichment
  22. 2026-09-06 20:28 UTCEG score recompute
  23. 2026-09-06 20:28 UTCGHSA enrichment
  24. 2026-09-06 13:48 UTCEPSS rescore
  25. 2026-09-06 07:22 UTCGHSA enrichment
  26. 2026-09-05 18:16 UTCEG score recompute
  27. 2026-09-05 18:16 UTCGHSA enrichment
  28. 2026-09-05 05:00 UTCGHSA enrichment
  29. 2026-09-04 15:54 UTCEG score recompute
  30. 2026-09-04 15:54 UTCGHSA enrichment
  31. 2026-09-04 05:07 UTCEPSS rescore
  32. 2026-09-04 02:48 UTCGHSA enrichment
  33. 2026-09-03 13:39 UTCGHSA enrichment
  34. 2026-09-03 00:30 UTCEG score recompute
  35. 2026-09-03 00:29 UTCGHSA enrichment
  36. 2026-09-02 14:12 UTCEPSS rescore
  37. 2026-09-02 11:11 UTCGHSA enrichment
  38. 2026-09-01 22:05 UTCEG score recompute
  39. 2026-09-01 22:05 UTCGHSA enrichment
  40. 2026-09-01 13:54 UTCEPSS rescore
  41. 2026-09-01 08:58 UTCEG score recompute
  42. 2026-09-01 08:58 UTCGHSA enrichment
  43. 2026-09-01 04:40 UTCEPSS rescore
  44. 2026-09-01 04:40 UTCEPSS rescore
  45. 2026-08-31 19:46 UTCGHSA enrichment
  46. 2026-08-31 06:19 UTCEG score recompute
  47. 2026-08-31 06:19 UTCGHSA enrichment
  48. 2026-08-30 19:18 UTCEPSS rescore
  49. 2026-08-30 19:17 UTCEPSS rescore
  50. 2026-08-30 17:08 UTCGHSA enrichment
  51. 2026-08-30 04:02 UTCEG score recompute
  52. 2026-08-30 04:01 UTCGHSA enrichment
  53. 2026-08-30 01:22 UTCEPSS rescore
  54. 2026-08-29 14:54 UTCGHSA enrichment
  55. 2026-08-29 01:47 UTCEG score recompute
  56. 2026-08-29 01:47 UTCGHSA enrichment
  57. 2026-08-28 21:42 UTCEPSS rescore
  58. 2026-08-28 06:47 UTCEG score recompute
  59. 2026-08-28 06:47 UTCGHSA enrichment
  60. 2026-08-27 17:38 UTCEG score recompute
  61. 2026-08-27 17:38 UTCGHSA enrichment
  62. 2026-08-27 16:53 UTCEG score recompute▲ 8.80
  63. 2026-08-27 16:53 UTCGHSA enrichment
  64. 2026-08-27 16:43 UTCMITRE cvelistV5CVSS v3 → 8.8 · severity → HIGH
  65. 2026-08-27 14:25 UTCEPSS rescore
  66. 2026-08-26 14:47 UTCEPSS rescore
  67. 2026-08-25 16:28 UTCGHSA enrichment
  68. 2026-08-25 13:49 UTCEPSS rescore
  69. 2026-08-24 14:18 UTCEPSS rescore
  70. 2026-08-23 00:19 UTCEPSS rescore
  71. 2026-08-22 18:24 UTCEG score recompute
  72. 2026-08-22 18:24 UTCGHSA enrichment
  73. 2026-08-21 23:49 UTCEPSS rescore
  74. 2026-08-20 22:56 UTCEPSS rescore
  75. 2026-08-19 20:19 UTCNVD update

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-76647?
CVE-2026-76647 is a high vulnerability published on August 19, 2026. Leantime JSON-RPC API through version 3.9.0 contains a missing authorization vulnerability in the JSON-RPC dispatcher in app/Domain/Api/Controllers/Jsonrpc.php. The dispatcher does not enforce authorization before invoking service-layer methods, allowing an authenticated user to call methods or act…
When was CVE-2026-76647 disclosed?
CVE-2026-76647 was first published in the National Vulnerability Database on August 19, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-76647 actively exploited?
CVE-2026-76647 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 68.6% of all scored CVEs.
What is the CVSS score of CVE-2026-76647?
CVE-2026-76647 has a CVSS v3.1 base score of 8.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-76647?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-76647, 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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