CVE-2022-4762: Materialis Companion < 1.3.40 - Contributor+ Stored XSS via Shortcode

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2023-02-06 · updated 2026-06-17

Description

The Materialis Companion WordPress plugin before 1.3.40 does not validate and escape some of its shortcode attributes before outputting them back in the page, which could allow users with a role as low as contributor to perform Stored Cross-Site Scripting attacks which could be used against high privilege users such as admins.

Affected products

Materialis Companion: before 1.3.40 — fixed in 1.3.40

How to fix

Upgrade to a fixed version: Materialis Companion 1.3.40. Check the vendor advisory for mitigations.

References

https://wpscan.com/vulnerability/4500566a-e5f2-40b8-a185-2bcace221b4e
https://wpscan.com/vulnerability/4500566a-e5f2-40b8-a185-2bcace221b4e

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