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Fencer Vulns
critical 9.8

CVE-2021-24442 in the critical feed json

Poll, Survey, Questionnaire and Voting system < 1.5.3 - Unauthenticated Blind SQL Injection

published 2021-07-12 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-11354

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
46.0%
EPSS 46.0% chance of exploitation in 30 days, percentile 98%
public exploits
0
none known, plus a Nuclei check

Summary

The Poll, Survey, Questionnaire and Voting system WordPress plugin before 1.5.3 did not sanitise, escape or validate the date_answers[] POST parameter before using it in a SQL statement when sending a Poll result, allowing unauthenticated users to perform SQL Injection attacks

Patch / fix

  • wpdevart poll,_survey,_questionnaire_and_voting_system 1.5.3

Exploit prediction

46.00% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • Nuclei template Wordpress Polls Widget < 1.5.3 - SQL Injection nuclei detection template
  • wpscan.com https://wpscan.com/vulnerability/7376666e-9b2a-4239-b11f-8544435b444a referenced PoC, tagged "exploit" by a source, unverified
  • in-spired.xyz https://www.in-spired.xyz/wpdevart-polls-blind-sql-injection/ 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

  • wpdevart Poll, Survey, Questionnaire and Voting system

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.