CVE-2023-2578: Buy Me a Coffee < 3.7 - Admin+ Stored XSS

Severity: medium (CVSS 4.8 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: 2023-07-10 · updated 2026-06-17

Description

The Buy Me a Coffee WordPress plugin before 3.7 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup).

Affected products

buymeacoffee Buy Me a Coffee – Button and Widget Plugin: before 3.7 — fixed in 3.7

How to fix

Upgrade to a fixed version: buymeacoffee Buy Me a Coffee – Button and Widget Plugin 3.7. Check the vendor advisory for mitigations.

References

https://wpscan.com/vulnerability/4dad1c0d-bcf9-4486-bd8e-387ac8e6c892
https://wpscan.com/vulnerability/4dad1c0d-bcf9-4486-bd8e-387ac8e6c892

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