CVE-2026-81199

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreHIGH confidence

Score 5.3 from GitHub Security Advisory published 2026-09-02. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this weekElevated
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: Elevated riskExposed: 0

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

The MasterStudy LMS WordPress Plugin WordPress plugin before 3.7.46 does not perform an authorization check before returning a student's learning statistics, allowing unauthenticated attackers to disclose the course counts, points, certificates, quiz and assignment totals of any registered user.

CVSS v3
5.3
EG Score
5.3(high)
EG Risk
55(Track)
EG Risk 55/100SSVC: 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
Severity53% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
38%
KEV
Not listed

Published

September 2, 2026

Last Modified

September 3, 2026

Advisory Details (1)

Auto-updated Sep 2, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

MasterStudy LMS < 3.7.46 – Unauthenticated Student Statistics Disclosure via student/stats REST Route | CVE 2026-81199 | Plugin Vulnerabilities

https://wpscan.com/vulnerability/8dd53f85-5d1b-4e0b-a0f5-8c65d89cefb5/

Vendor Advisories for CVE-2026-81199(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 18× in last 7d / 64× 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. 2026-09-24 16:59 UTCEG score recompute
  2. 2026-09-24 16:59 UTCGHSA enrichment
  3. 2026-09-24 14:04 UTCEPSS rescore
  4. 2026-09-23 17:54 UTCEPSS rescore
  5. 2026-09-23 17:36 UTCGHSA enrichment
  6. 2026-09-22 18:03 UTCEG score recompute
  7. 2026-09-22 18:03 UTCGHSA enrichment
  8. 2026-09-22 16:01 UTCEPSS rescore
  9. 2026-09-21 21:09 UTCEPSS rescore
  10. 2026-09-21 18:14 UTCEG score recompute
  11. 2026-09-21 18:14 UTCGHSA enrichment
  12. 2026-09-20 20:16 UTCEPSS rescore
  13. 2026-09-20 18:50 UTCGHSA enrichment
  14. 2026-09-19 19:27 UTCEG score recompute
  15. 2026-09-19 19:27 UTCGHSA enrichment
  16. 2026-09-18 20:03 UTCEG score recompute
  17. 2026-09-18 20:03 UTCGHSA enrichment
  18. 2026-09-18 19:28 UTCEPSS rescore
  19. 2026-09-17 20:39 UTCEG score recompute
  20. 2026-09-17 20:39 UTCGHSA enrichment
  21. 2026-09-16 19:16 UTCEG score recompute
  22. 2026-09-16 19:16 UTCGHSA enrichment
  23. 2026-09-16 14:08 UTCEPSS rescore
  24. 2026-09-16 05:15 UTCEPSS rescore
  25. 2026-09-15 19:53 UTCEG score recompute
Show 39 more
  1. 2026-09-15 19:53 UTCGHSA enrichment
  2. 2026-09-15 03:12 UTCEPSS rescore
  3. 2026-09-15 03:12 UTCEPSS rescore
  4. 2026-09-14 20:30 UTCGHSA enrichment
  5. 2026-09-13 21:07 UTCEG score recompute
  6. 2026-09-13 21:07 UTCGHSA enrichment
  7. 2026-09-12 21:44 UTCEG score recompute
  8. 2026-09-12 21:44 UTCGHSA enrichment
  9. 2026-09-11 22:20 UTCEG score recompute
  10. 2026-09-11 22:20 UTCGHSA enrichment
  11. 2026-09-11 14:53 UTCEPSS rescore
  12. 2026-09-11 14:53 UTCEPSS rescore
  13. 2026-09-10 22:56 UTCEG score recompute
  14. 2026-09-10 22:56 UTCGHSA enrichment
  15. 2026-09-09 23:33 UTCGHSA enrichment
  16. 2026-09-08 23:15 UTCEG score recompute
  17. 2026-09-08 23:15 UTCGHSA enrichment
  18. 2026-09-08 22:01 UTCEPSS rescore
  19. 2026-09-07 15:39 UTCGHSA enrichment
  20. 2026-09-06 16:17 UTCEG score recompute
  21. 2026-09-06 16:17 UTCGHSA enrichment
  22. 2026-09-06 13:48 UTCEPSS rescore
  23. 2026-09-05 16:53 UTCEG score recompute
  24. 2026-09-05 16:53 UTCGHSA enrichment
  25. 2026-09-05 15:31 UTCEPSS rescore
  26. 2026-09-04 17:28 UTCEG score recompute
  27. 2026-09-04 17:28 UTCGHSA enrichment
  28. 2026-09-04 05:07 UTCEPSS rescore
  29. 2026-09-03 18:04 UTCGHSA enrichment
  30. 2026-09-03 10:51 UTCEG score recompute
  31. 2026-09-03 10:51 UTCGHSA enrichment
  32. 2026-09-02 14:12 UTCEPSS rescore
  33. 2026-09-02 11:25 UTCGHSA enrichment
  34. 2026-09-02 10:51 UTCEG score recompute▲ 5.30
  35. 2026-09-02 10:50 UTCGHSA enrichment
  36. 2026-09-02 10:48 UTCMITRE cvelistV5CVSS v3 → 5.3 · severity → MEDIUM
  37. 2026-09-02 06:26 UTCNVD update
  38. 2026-09-02 06:06 UTCEG score recompute
  39. 2026-09-02 06:05 UTCMITRE cvelistV5first tracked

Publicly available exploits

(1 reference)

Working exploit code is in the public domain. Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Nucleihttp/cves/2026/CVE-2026-81199.yaml
    First seen Jan 1, 2026

    MasterStudy LMS < 3.7.46 - Unauthenticated Student Statistics Disclosure

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-81199?
CVE-2026-81199 is a medium vulnerability published on September 2, 2026. The MasterStudy LMS WordPress Plugin WordPress plugin before 3.7.46 does not perform an authorization check before returning a student's learning statistics, allowing unauthenticated attackers to disclose the course counts, points, certificates, quiz and assignment totals of any registered user.
When was CVE-2026-81199 disclosed?
CVE-2026-81199 was first published in the National Vulnerability Database on September 2, 2026, with the most recent update on September 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-81199 actively exploited?
CVE-2026-81199 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 61.7% of all scored CVEs.
What is the CVSS score of CVE-2026-81199?
CVE-2026-81199 has a CVSS v3.1 base score of 5.3 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-81199?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-81199, 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

Explore the affected products and dependency analysis for CVE-2026-81199

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