CVE-2026-8637

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-06-10. a secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

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

A potential uncontrolled search path vulnerability was reported in the LanSchool Classic client application that could allow a local authenticated user to execute arbitrary code with elevated privileges.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity78% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
3%
KEV
Not listed

Published

June 10, 2026

Last Modified

June 10, 2026

References (1)

Vendor Advisories for CVE-2026-8637(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 / 103× 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 227 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-8637?
CVE-2026-8637 is a high vulnerability published on June 10, 2026. A potential uncontrolled search path vulnerability was reported in the LanSchool Classic client application that could allow a local authenticated user to execute arbitrary code with elevated privileges.
When was CVE-2026-8637 disclosed?
CVE-2026-8637 was first published in the National Vulnerability Database on June 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-8637 actively exploited?
CVE-2026-8637 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 97.2% of all scored CVEs.
What is the CVSS score of CVE-2026-8637?
CVE-2026-8637 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-8637?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-8637, 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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