CVE-2022-4544: MashShare < 3.8.7 - Contributor+ Stored XSS

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2023-01-16 · updated 2026-06-17

Description

The MashShare WordPress plugin before 3.8.7 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

Social Media Share Buttons | MashShare: before 3.8.7 — fixed in 3.8.7

How to fix

Upgrade to a fixed version: Social Media Share Buttons | MashShare 3.8.7. Check the vendor advisory for mitigations.

References

https://wpscan.com/vulnerability/96e34d3d-627f-42f2-bfdb-c9d47dbf396c
https://wpscan.com/vulnerability/96e34d3d-627f-42f2-bfdb-c9d47dbf396c

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