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Fencer Vulns
critical 9.8

CVE-2021-43140 json

SQL Injection vulnerability exists in Sourcecodester.

published 2021-11-03 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-30088

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.8%
EPSS 4.8% chance of exploitation in 30 days, percentile 91%
public exploits
1
Exploit-DB

Summary

SQL Injection vulnerability exists in Sourcecodester. Simple Subscription Website 1.0. via the login.

Timeline

  1. Published
  2. First public exploit (EDB-50522)

Exploit prediction

4.77% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-50522 Simple Subscription Website 1.0 - SQLi Authentication Bypass webapps, 2021-11-15
  • github.com https://github.com/Dir0x/CVE-2021-43140 referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com http://packetstormsecurity.com/files/164968/Simple-Subscription-Website-1.0-SQL-Injection.html referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/nu11secur1ty/CVE-mitre/tree/main/CVE-2021-43140 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.