CVE-2026-8786

MEDIUMNVD 6.36.3—
EchelonGraph scoreMEDIUM confidence

Score 6.3 from GitHub Security Advisory (severity: LOW) published 2026-05-18. NVD baseline CVSS 6.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
6.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.3Exploit: NoneExposed: 0

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

A vulnerability has been found in Tencent WeKnora up to 0.3.6. Affected by this issue is the function getKnowledgeBaseForInitialization of the file internal/handler/initialization.go of the component Config API Endpoint. The manipulation of the argument kbId leads to authorization bypass. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS v3
6.3
EG Score
6.3(medium)
EPSS
18.6%
KEV
Not listed

Published

May 18, 2026

Last Modified

May 19, 2026

Advisory Details (1)

Auto-updated May 18, 2026
No patch confirmed yet.
generic

Insecure Direct Object Reference (IDOR) Allows Unauthorized Read and Modification of Knowledge Base Configurations · GitHub

https://gist.github.com/YLChen-007/1cdc50418f29af7ae671466425e52c7b

Vendor Advisories for CVE-2026-8786(1)

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

Weakness Classification(2)

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

Data Freshness Timeline

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

Frequently asked(5)

What is CVE-2026-8786?
CVE-2026-8786 is a medium vulnerability published on May 18, 2026. A vulnerability has been found in Tencent WeKnora up to 0.3.6. Affected by this issue is the function getKnowledgeBaseForInitialization of the file internal/handler/initialization.go of the component Config API Endpoint. The manipulation of the argument kbId leads to authorization bypass. It is…
When was CVE-2026-8786 disclosed?
CVE-2026-8786 was first published in the National Vulnerability Database on May 18, 2026, with the most recent update on May 19, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-8786 actively exploited?
CVE-2026-8786 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 18.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-8786?
CVE-2026-8786 has a CVSS v3 base score of 6.3 (NVD).
How do I remediate CVE-2026-8786?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-8786, 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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