CVE-2021-46782

Pricing Table by Supsystic <= 1.9.4 - Reflected Cross-Site Scripting

2022-04-09 00:00

Strategic Overview

Status: Patched in 1.9.5
Affected Plugin: Pricing Table by Supsystic
Affected Version: <= 1.9.4
CVSS: 6.1Medium
Weakness type: CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE: CVE-2021-46782

View all Pricing Table by Supsystic vulnerabilities

At a glance

CVE-2021-46782 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Pricing Table by Supsystic WordPress plugin, affecting versions <= 1.9.4. It carries a CVSS score of 6.1 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 1.9.5; sites on affected versions should update now. Disclosed April 2022, reported by 0xB9.

Vulnerability Overview

The Pricing Table by Supsystic WordPress plugin before 1.9.5 does not escape the tab parameter before outputting it back in an attribute in the admin dashboard, leading to a Reflected Cross-Site Scripting

Technical Analysis

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

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

Reaching this weakness in Pricing Table by Supsystic <= 1.9.4 takes a caller who can reach the endpoint. 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. For Pricing Table by Supsystic the fix is 1.9.5: builds <= 1.9.4 are affected, anything from 1.9.5 onward is not.

Remediation

Update to version 1.9.5, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Pricing Table by Supsystic: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Pricing Table by Supsystic 1.9.5 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2021-46782 https://www.wordfence.com/threat-intel/vulnerabilities/id/2d390a7e-f790-4953-b3cb-be31cfec6fb0 https://nvd.nist.gov/vuln/detail/CVE-2021-46782

Related records

Same weakness class

7.2CVE-2020-9393: Pricing Table by Supsystic <= 1.8.1 Stored XSSCVE-2020-9393

Other vulnerabilities in Pricing Table by Supsystic

CVSS Vector

6.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone

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