CVE-2023-0081: MonsterInsights < 8.12.1 - Contributor+ Stored XSS

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 MonsterInsights WordPress plugin before 8.12.1 does not validate and escape some of its block options before outputting them back in a page/post where the block is embed, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks.

Affected products

MonsterInsights: before 8.12.1 — fixed in 8.12.1

How to fix

Upgrade to a fixed version: MonsterInsights 8.12.1. Check the vendor advisory for mitigations.

References

https://wpscan.com/vulnerability/76d2963c-ebff-498f-9484-3c3008750c14
https://wpscan.com/vulnerability/76d2963c-ebff-498f-9484-3c3008750c14

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