PT-2021-15679 · WordPress · Constant Contact Forms

Nguyen Anh Tien · Published 2021-03-18 · Updated 2021-03-24 · CVE-2021-24134

Positive Technologies (AI Summary)

CVSS v3.1

4.8

Medium

Base vector

AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions: Constant Contact Forms WordPress plugin versions prior to 1.8.8

Description: The issue is caused by unvalidated input and a lack of output encoding in the Constant Contact Forms WordPress plugin, leading to multiple Stored Cross-Site Scripting vulnerabilities. This allows a high-privileged user, such as an Editor or higher, to inject arbitrary JavaScript code or HTML in posts where the malicious form is embedded.

Recommendations: For versions prior to 1.8.8, update to version 1.8.8 or later to resolve the issue. As a temporary workaround, consider restricting the use of the Constant Contact Forms WordPress plugin until a patch is applied, or limit the privileges of users who can embed forms to prevent potential exploitation.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2021-24134

Affected Products

Constant Contact Forms

References · 4

• 🔥 https://wpscan.com/vulnerability/8f3cca92-d072-4806-9142-7f1a987f840b · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-24134 · Security Note
• https://osv.dev/vulnerability/CVE-2021-24134 · Vendor Advisory
• https://t.me/cibsecurity/25102 · Telegram Post