CVE-2023-5340: Five Star Restaurant Menu and Food Ordering < 2.4.11 - Unauthenticated PHP Object Injection

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.2% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2023-11-20 · updated 2026-06-17
Weakness: CWE-74

Description

The Five Star Restaurant Menu and Food Ordering WordPress plugin before 2.4.11 unserializes user input via an AJAX action available to unauthenticated users, allowing them to perform PHP Object Injection when a suitable gadget is present on the blog.

Affected products

Five Star Restaurant Menu and Food Ordering: before 2.4.11 — fixed in 2.4.11

How to fix

Upgrade to a fixed version: Five Star Restaurant Menu and Food Ordering 2.4.11. Check the vendor advisory for mitigations.

References

https://wpscan.com/vulnerability/91a5847a-62e7-4b98-a554-5eecb6a06e5b
https://wpscan.com/vulnerability/91a5847a-62e7-4b98-a554-5eecb6a06e5b

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