CVE-2026-12483

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-09-04. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: None knownExposed: 0

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

The LearnDash LMS plugin for WordPress is vulnerable to Unrestricted File Type Upload in versions up to and including 5.1.5. This is due to insufficient input validation in the 'learndash_fileupload_process' function, which iterates through an entire array and validates only the first file. This makes it possible for authenticated attackers, with subscriber-level access and above who are enrolled in a course with assignment uploads enabled, to upload arbitrary disallowed files, including PHP files, to the server's wp-content/uploads/learndash/assignments/ directory. The uploaded files can only be used for Remote Code Execution if default server configurations have been changed to allow for execution.

CVSS v3
7.5
EG Score
7.5(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
Severity75% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
32%
KEV
Not listed

Published

September 4, 2026

Last Modified

September 8, 2026

Advisory Details (1)

Auto-updated Sep 4, 2026
No patch confirmed yet.
generic

LearnDash | WordPress LMS Plugin & Course Software

https://www.liquidweb.com/software/learndash/

Vendor Advisories for CVE-2026-12483(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 25× in last 7d / 68× 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. 2026-09-21 03:16 UTCEG score recompute
  2. 2026-09-21 03:16 UTCGHSA enrichment
  3. 2026-09-20 20:15 UTCEPSS rescore
  4. 2026-09-20 16:09 UTCGHSA enrichment
  5. 2026-09-20 04:54 UTCGHSA enrichment
  6. 2026-09-19 17:46 UTCEG score recompute
  7. 2026-09-19 17:46 UTCGHSA enrichment
  8. 2026-09-19 06:38 UTCGHSA enrichment
  9. 2026-09-18 19:31 UTCEG score recompute
  10. 2026-09-18 19:31 UTCGHSA enrichment
  11. 2026-09-18 19:27 UTCEPSS rescore
  12. 2026-09-18 08:22 UTCGHSA enrichment
  13. 2026-09-17 21:10 UTCEG score recompute
  14. 2026-09-17 21:10 UTCGHSA enrichment
  15. 2026-09-17 10:03 UTCGHSA enrichment
  16. 2026-09-16 22:56 UTCEG score recompute
  17. 2026-09-16 22:56 UTCGHSA enrichment
  18. 2026-09-16 11:49 UTCEG score recompute
  19. 2026-09-16 11:49 UTCGHSA enrichment
  20. 2026-09-16 05:14 UTCEPSS rescore
  21. 2026-09-16 00:42 UTCGHSA enrichment
  22. 2026-09-15 13:19 UTCEG score recompute
  23. 2026-09-15 13:19 UTCGHSA enrichment
  24. 2026-09-15 02:12 UTCGHSA enrichment
  25. 2026-09-14 15:05 UTCGHSA enrichment
Show 43 more
  1. 2026-09-14 03:58 UTCGHSA enrichment
  2. 2026-09-13 16:51 UTCEG score recompute
  3. 2026-09-13 16:51 UTCGHSA enrichment
  4. 2026-09-13 16:46 UTCEPSS rescore
  5. 2026-09-13 05:44 UTCGHSA enrichment
  6. 2026-09-12 18:37 UTCEG score recompute
  7. 2026-09-12 18:37 UTCGHSA enrichment
  8. 2026-09-12 15:00 UTCEPSS rescore
  9. 2026-09-12 07:30 UTCGHSA enrichment
  10. 2026-09-11 20:23 UTCEG score recompute
  11. 2026-09-11 20:23 UTCGHSA enrichment
  12. 2026-09-11 14:52 UTCEPSS rescore
  13. 2026-09-11 09:36 UTCEPSS rescore
  14. 2026-09-11 09:16 UTCGHSA enrichment
  15. 2026-09-10 22:09 UTCGHSA enrichment
  16. 2026-09-10 11:01 UTCEG score recompute
  17. 2026-09-10 11:01 UTCGHSA enrichment
  18. 2026-09-10 09:34 UTCEPSS rescore
  19. 2026-09-09 23:50 UTCGHSA enrichment
  20. 2026-09-09 12:42 UTCGHSA enrichment
  21. 2026-09-09 01:29 UTCEG score recompute
  22. 2026-09-09 01:29 UTCGHSA enrichment
  23. 2026-09-08 22:00 UTCEPSS rescore
  24. 2026-09-08 14:18 UTCGHSA enrichment
  25. 2026-09-08 13:03 UTCGHSA enrichment
  26. 2026-09-08 01:52 UTCEG score recompute
  27. 2026-09-08 01:52 UTCGHSA enrichment
  28. 2026-09-07 16:01 UTCEPSS rescore
  29. 2026-09-07 14:44 UTCGHSA enrichment
  30. 2026-09-07 01:58 UTCGHSA enrichment
  31. 2026-09-06 14:50 UTCEG score recompute
  32. 2026-09-06 14:50 UTCGHSA enrichment
  33. 2026-09-06 13:47 UTCEPSS rescore
  34. 2026-09-06 03:43 UTCGHSA enrichment
  35. 2026-09-05 16:36 UTCEG score recompute
  36. 2026-09-05 16:36 UTCGHSA enrichment
  37. 2026-09-05 05:28 UTCEG score recompute
  38. 2026-09-05 05:28 UTCGHSA enrichment
  39. 2026-09-04 18:19 UTCEG score recompute
  40. 2026-09-04 18:19 UTCGHSA enrichment
  41. 2026-09-04 14:19 UTCEG score recompute
  42. 2026-09-04 13:38 UTCEG score recompute
  43. 2026-09-04 13:38 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-12483?
CVE-2026-12483 is a high vulnerability published on September 4, 2026. The LearnDash LMS plugin for WordPress is vulnerable to Unrestricted File Type Upload in versions up to and including 5.1.5. This is due to insufficient input validation in the 'learndashfileuploadprocess' function, which iterates through an entire array and validates only the first file. This…
When was CVE-2026-12483 disclosed?
CVE-2026-12483 was first published in the National Vulnerability Database on September 4, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-12483 actively exploited?
CVE-2026-12483 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 67.9% of all scored CVEs.
What is the CVSS score of CVE-2026-12483?
CVE-2026-12483 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-12483?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-12483, 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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