CVE-2021-36896

Pricing Table <= 1.5.2 - Authenticated (Author+) Stored Cross-Site Scripting

2022-04-05 14:36
Ngo Van Thien

Strategic Overview

Status
Unpatched
Affected Plugin
Pricing Table
Affected Version
<= 1.5.2
CVSS
4.8Medium
Weakness type
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE
CVE-2021-36896
View all Pricing Table vulnerabilities

At a glance

CVE-2021-36896 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Pricing Table WordPress plugin, affecting versions <= 1.5.2. It carries a CVSS score of 4.8 (reachable over the network; low attack complexity). Exploitation requires an authenticated account at Author level or above. No fixed release has been reported yet; treat installations running this software as exposed. Disclosed April 2022, reported by Ngo Van Thien.

Vulnerability Overview

Authenticated (author or higher user role) Stored Cross-Site Scripting (XSS) vulnerability in Pricing Table (WordPress plugin) versions <= 1.5.2

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed.

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Reaching this weakness in Pricing Table <= 1.5.2 takes an account at Author level or above. Cross-site scripting happens when input from a request is written into a page without being escaped for the context it lands in, so the browser parses attacker-supplied text as markup or script.

Injected script runs with the privileges of whoever views the affected page, which is how these flaws turn into administrator session theft, silent account creation or persistent backdoors in page content. No fixed build of this plugin is recorded for Pricing Table yet, so installs running <= 1.5.2 stay exposed until the vendor ships one.

Remediation

No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement.

How does WordSec protect against this?

An attacker needs Author access first, so the firewall sees the attempt as traffic from a logged-in account: WordSec's web application firewall inspects request payloads before WordPress loads them. No patched version is recorded yet, which is the case where a filtering layer matters most, because there is nothing to update to.

  • Firewall
  • Alerts

External References

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C