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Fencer Vulns
critical 9.8

CVE-2021-42580 in the critical feed json

Sourcecodester Online Learning System 2.0 is vunlerable to sql injection authentication bypass in admin login file (/admin/login.php) and a…

published 2021-11-15 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-29545

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
10.1%
EPSS 10.1% chance of exploitation in 30 days, percentile 95%
public exploits
1
Exploit-DB

Summary

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.

Timeline

  1. Published
  2. First public exploit (EDB-50526)

Exploit prediction

10.07% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-50526 Online Learning System 2.0 - Remote Code Execution (RCE) webapps, 2021-11-16
  • github.com https://github.com/nu11secur1ty/CVE-nu11secur1ty/tree/main/vendors/oretnom23/CVE-nu11-07 referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/DjebbarAnon/online-learning-system-v2-sqli-authentication-bypass-file-upload-unauthenticated-RCE referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com http://packetstormsecurity.com/files/164985/Online-Learning-System-2.0-Remote-Code-Execution.html referenced PoC, tagged "exploit" by a source, unverified
  • nu11secur1ty.com https://www.nu11secur1ty.com/2021/09/cve-nu11-07-elearning-v2by-oretnom23-is.html referenced PoC, tagged "exploit" by a source, unverified
  • nu11secur1ty.com https://www.nu11secur1ty.com/2021/11/cve-2021-42580.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-89 Improper Neutralization of Special Elements used in an SQL Command

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.