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Fencer Intel
medium 5.4

CVE-2021-24247 json

Contact Form Check Tester <= 1.0.2 - Broken Access Control to Cross-Site Scripting (XSS)

published 5y ago modified 4mo ago also EUVD-2021-11161

cvss
5.4
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.7%
EPSS 4.7% chance of exploitation in 30 days, percentile 91%
public exploits
1
Exploit-DB

Summary

The Contact Form Check Tester WordPress plugin through 1.0.2 settings are visible to all registered users in the dashboard and are lacking any sanitisation. As a result, any registered user, such as subscriber, can leave an XSS payload in the plugin settings, which will be triggered by any user visiting them, and could allow for privilege escalation. The vendor decided to close the plugin.

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Timeline

  1. Published
  2. First public exploit (EDB-50703)

Exploit prediction

4.68% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-50703 WordPress Plugin Contact Form Check Tester 1.0.2 - Broken Access Control webapps, 2022-02-02
  • wpscan.com https://wpscan.com/vulnerability/e2990a7a-d4f0-424e-b01d-ecf67cf9c9f3 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 3.5 AV:N/AC:M/Au:S/C:N/I:P/A:N

Affected products

  • MooveAgency Contact Form Check Tester

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation
Technology feeds

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.