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Fencer Vulns
critical 9.8

CVE-2021-24731 json

Pie Register < 3.7.1.6 - Unauthenticated SQL Injection

published 2021-11-08 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-11643

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
6.4%
EPSS 6.4% chance of exploitation in 30 days, percentile 93%
public exploits
0
none known, plus a Nuclei check

Summary

The Registration Forms – User profile, Content Restriction, Spam Protection, Payment Gateways, Invitation Codes WordPress plugin before 3.7.1.6 does not properly escape user data before using it in a SQL statement in the wp-json/pie/v1/login REST API endpoint, leading to an SQL injection.

Patch / fix

  • genetechsolutions pie_register 3.7.1.6

Exploit prediction

6.42% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • Nuclei template Pie Register < 3.7.1.6 - SQL Injection nuclei detection template
  • wpscan.com https://wpscan.com/vulnerability/6bed00e4-b363-43b8-a392-d068d342151a 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

Affected products

  • Unknown Registration Forms – User profile, Content Restriction, Spam Protection, Payment Gateways, Invitation Codes

Classification

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

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.