CVE-2021-42580

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-24. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 10%CVSS: 9.8Exploit: Elevated riskExposed: 0

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

Sourcecodester Online Learning System 2.0 is vunlerable to sql injection authentication bypass in admin login file (/admin/login.php) and authenticated file upload in (Master.php) file , we can craft these two vunlerablities to get unauthenticated remote command execution.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
65(Track*)
EG Risk 65/100SSVC: 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
Severity98% × 45%
Exploitation40% × 40%
Automatability30% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
10%
EPSS %ILE
95%
KEV
Not listed

Published

November 15, 2021

Last Modified

December 18, 2024

Advisory Details (4)

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

CVE-2021-42580

https://www.nu11secur1ty.com/2021/11/cve-2021-42580.html
generic

CVE-nu11-07-CVE-2021-42580-eLearning V2(by: oretnom23)

https://www.nu11secur1ty.com/2021/09/cve-nu11-07-elearning-v2by-oretnom23-is.html
generic

CVE-nu11secur1ty/vendors/oretnom23/CVE-nu11-07 at main · nu11secur1ty/CVE-nu11secur1ty · GitHub

https://github.com/nu11secur1ty/CVE-nu11secur1ty/tree/main/vendors/oretnom23/CVE-nu11-07
generic

Locked Out | Packet Storm

http://packetstormsecurity.com/files/164985/Online-Learning-System-2.0-Remote-Code-Execution.html

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 29× 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 139 total refreshes for this CVE.

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

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-50526
    First seen Nov 16, 2021

    Online Learning System 2.0 - Remote Code Execution (RCE)

    Open source ↗

Frequently asked(5)

What is CVE-2021-42580?
CVE-2021-42580 is a critical vulnerability published on November 15, 2021. Sourcecodester Online Learning System 2.0 is vunlerable to sql injection authentication bypass in admin login file (/admin/login.php) and authenticated file upload in (Master.php) file , we can craft these two vunlerablities to get unauthenticated remote command execution.
When was CVE-2021-42580 disclosed?
CVE-2021-42580 was first published in the National Vulnerability Database on November 15, 2021, with the most recent update on December 18, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2021-42580 actively exploited?
CVE-2021-42580 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 10% probability of exploitation in the next 30 days, which ranks it in the top 4.7% of all scored CVEs.
What is the CVSS score of CVE-2021-42580?
CVE-2021-42580 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2021-42580?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-42580, 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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