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Fencer Intel
critical 9.8

CVE-2021-42169 json

The Simple Payroll System with Dynamic Tax Bracket in PHP using SQLite Free Source Code (by: oretnom23 ) is vulnerable from remote SQL-Inje…

published 5y ago modified 4mo ago also EUVD-2021-29152

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.8%
EPSS 2.8% chance of exploitation in 30 days, percentile 86%
public exploits
0
none known

Summary

The Simple Payroll System with Dynamic Tax Bracket in PHP using SQLite Free Source Code (by: oretnom23 ) is vulnerable from remote SQL-Injection-Bypass-Authentication for the admin account. The parameter (username) from the login form is not protected correctly and there is no security and escaping from malicious payloads.

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Exploit prediction

2.83% chance of exploitation in the next 30 days, higher than 86% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • github.com https://github.com/nu11secur1ty/CVE-nu11secur1ty/tree/main/vendors/oretnom23/CVE-nu11-21-100521 referenced PoC, tagged "exploit" by a source, unverified
  • exploit-db.com https://www.exploit-db.com/exploits/50403 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 Intel 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.