Skip to content
Fencer Vulns
high 8.8

CVE-2021-42666 json

A SQL Injection vulnerability exists in Sourcecodester Engineers Online Portal in PHP via the id parameter to quiz_question.php, which coul…

published 2021-11-05 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-29627

cvss
8.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.5%
EPSS 4.5% chance of exploitation in 30 days, percentile 91%
public exploits
0
none known

Summary

A SQL Injection vulnerability exists in Sourcecodester Engineers Online Portal in PHP via the id parameter to quiz_question.php, which could let a malicious user extract sensitive data from the web server and in some cases use this vulnerability in order to get a remote code execution on the remote web server.

Exploit prediction

4.52% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/nu11secur1ty/CVE-nu11secur1ty/tree/main/vendors/janobe/CVE-nu11-101321 referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/TheHackingRabbi/CVE-2021-42666 referenced PoC, tagged "exploit" by a source, unverified
  • exploit-db.com https://www.exploit-db.com/exploits/50453 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 6.5 AV:N/AC:L/Au:S/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.