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CVE-2021-24134

MEDIUM 4.8 CVSS 3.1
Published
March 18, 2021
Last modified
June 17, 2026
NVD status
Modified
Reported by
contact@wpscan.com
Weakness
CWE-79
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Description

Unvalidated input and lack of output encoding in the Constant Contact Forms WordPress plugin, versions before 1.8.8, lead to multiple Stored Cross-Site Scripting vulnerabilities, which allowed high-privileged user (Editor+) to inject arbitrary JavaScript code or HTML in posts where the malicious form is embed.

Affected WordPress components

  • Constant Contact Forms Plugin · constant-contact-forms
    Possible match Active
    From 1.8.8 (including) to 1.8.8 (excluding)
    View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • Unknown Constant Contact Forms — From 1.8.8 (including) to 1.8.8 (excluding)
  • constantcontact constant_contact_forms — Before 1.8.8

References

  • wpscan.com https://wpscan.com/vulnerability/8f3cca92-d072-4806-9142-7f1a987f840b Exploit, Third Party Advisory
  • nvd.nist.gov Official NVD record