CVE-2026-57640

MEDIUMPre-NVD 4.34.3—
EchelonGraph scoreMEDIUM confidence

Score 4.3 from GitHub Security Advisory published 2026-06-26. a secondary CVSS source baseline 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.3Exploit: None knownExposed: 0

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

Subscriber Broken Access Control in MasterStudy LMS <= 3.7.30 versions.

CVSS v3
4.3
EG Score
4.3(medium)
EG Risk
24(Track)
EG Risk 24/100SSVC: 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
Severity43% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
17%
KEV
Not listed

Published

June 26, 2026

Last Modified

June 26, 2026

Advisory Details (1)

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

Broken Access Control in WordPress MasterStudy LMS Plugin - Patchstack

https://patchstack.com/database/wordpress/plugin/masterstudy-lms-learning-management-system/vulnerability/wordpress-masterstudy-lms-plugin-3-7-30-broken-access-control-vulnerability?_s_id=cve

Vendor Advisories for CVE-2026-57640(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 5× in last 7d / 50× 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 168 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-57640?
CVE-2026-57640 is a medium vulnerability published on June 26, 2026. Subscriber Broken Access Control in MasterStudy LMS <= 3.7.30 versions.
When was CVE-2026-57640 disclosed?
CVE-2026-57640 was first published in the National Vulnerability Database on June 26, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-57640 actively exploited?
CVE-2026-57640 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 83.1% of all scored CVEs.
What is the CVSS score of CVE-2026-57640?
CVE-2026-57640 has a CVSS v3 base score of 4.3 (NVD).
How do I remediate CVE-2026-57640?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-57640, 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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