CVE-2026-16563

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreHIGH confidence

Score 6.5 from GitHub Security Advisory published 2026-08-03. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: None knownExposed: 0

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

The Academy LMS WordPress plugin before 3.8.3 does not verify course enrollment or lesson publication status when returning a single lesson through its REST API, allowing users with a self-service student (Subscriber-level) account to disclose the content of arbitrary lessons, including lessons of paid courses they are not enrolled in and unpublished (draft, pending, private) lessons.

CVSS v3
6.5
EG Score
6.5(high)
EG Risk
34(Track)
EG Risk 34/100SSVC: 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
Severity65% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
10%
KEV
Not listed

Published

August 3, 2026

Last Modified

August 3, 2026

Advisory Details (1)

Auto-updated Aug 3, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

Academy LMS < 3.8.3 – Subscriber+ Arbitrary Lesson Content Disclosure via lessons REST Endpoint | CVE 2026-16563 | Plugin Vulnerabilities

https://wpscan.com/vulnerability/eec480b0-67af-4642-b6b3-cba095394286/

Vendor Advisories for CVE-2026-16563(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 20× in last 7d / 52× 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. 2026-08-20 22:55 UTCEPSS rescore
  2. 2026-08-20 20:25 UTCGHSA enrichment
  3. 2026-08-19 19:00 UTCEG score recompute
  4. 2026-08-19 19:00 UTCGHSA enrichment
  5. 2026-08-19 17:03 UTCEPSS rescore
  6. 2026-08-18 15:49 UTCEG score recompute
  7. 2026-08-18 15:49 UTCGHSA enrichment
  8. 2026-08-18 13:48 UTCEPSS rescore
  9. 2026-08-17 13:47 UTCEPSS rescore
  10. 2026-08-17 12:07 UTCEG score recompute
  11. 2026-08-17 12:07 UTCGHSA enrichment
  12. 2026-08-16 14:56 UTCEPSS rescore
  13. 2026-08-16 10:39 UTCEG score recompute
  14. 2026-08-16 10:39 UTCGHSA enrichment
  15. 2026-08-16 02:14 UTCEPSS rescore
  16. 2026-08-15 09:15 UTCEG score recompute
  17. 2026-08-15 09:15 UTCGHSA enrichment
  18. 2026-08-15 01:30 UTCEPSS rescore
  19. 2026-08-14 07:49 UTCEG score recompute
  20. 2026-08-14 07:49 UTCGHSA enrichment
  21. 2026-08-13 22:00 UTCEPSS rescore
  22. 2026-08-13 06:24 UTCEG score recompute
  23. 2026-08-13 06:24 UTCGHSA enrichment
  24. 2026-08-12 13:50 UTCEPSS rescore
  25. 2026-08-12 04:59 UTCEG score recompute
Show 27 more
  1. 2026-08-12 04:59 UTCGHSA enrichment
  2. 2026-08-11 13:42 UTCEPSS rescore
  3. 2026-08-11 03:33 UTCEG score recompute
  4. 2026-08-11 03:33 UTCGHSA enrichment
  5. 2026-08-11 00:00 UTCEPSS rescore
  6. 2026-08-10 02:09 UTCEG score recompute
  7. 2026-08-10 02:09 UTCGHSA enrichment
  8. 2026-08-09 13:46 UTCEPSS rescore
  9. 2026-08-09 00:44 UTCGHSA enrichment
  10. 2026-08-07 23:18 UTCEG score recompute
  11. 2026-08-07 23:18 UTCGHSA enrichment
  12. 2026-08-06 21:53 UTCEG score recompute
  13. 2026-08-06 21:53 UTCGHSA enrichment
  14. 2026-08-06 13:46 UTCEPSS rescore
  15. 2026-08-05 20:28 UTCEG score recompute
  16. 2026-08-05 20:28 UTCGHSA enrichment
  17. 2026-08-05 19:17 UTCEPSS rescore
  18. 2026-08-04 19:03 UTCEG score recompute
  19. 2026-08-04 19:03 UTCGHSA enrichment
  20. 2026-08-04 15:10 UTCEPSS rescore
  21. 2026-08-04 10:38 UTCEPSS rescore
  22. 2026-08-03 17:38 UTCEG score recompute▲ 6.50
  23. 2026-08-03 17:38 UTCGHSA enrichment
  24. 2026-08-03 17:36 UTCNVD updateCVSS v3 → 6.5 · severity → MEDIUM
  25. 2026-08-03 07:22 UTCNVD update
  26. 2026-08-03 06:34 UTCEG score recompute
  27. 2026-08-03 06:33 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-16563?
CVE-2026-16563 is a medium vulnerability published on August 3, 2026. The Academy LMS WordPress plugin before 3.8.3 does not verify course enrollment or lesson publication status when returning a single lesson through its REST API, allowing users with a self-service student (Subscriber-level) account to disclose the content of arbitrary lessons, including lessons of…
When was CVE-2026-16563 disclosed?
CVE-2026-16563 was first published in the National Vulnerability Database on August 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-16563 actively exploited?
CVE-2026-16563 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 89.7% of all scored CVEs.
What is the CVSS score of CVE-2026-16563?
CVE-2026-16563 has a CVSS v3.1 base score of 6.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-16563?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-16563, 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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