CVE-2023-5340

Name: CVE-2023-5340
Creator: NVD / NIST
Published: 2023-11-20T19:15:09.723+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.24%

Last modified Jun 17, 2026

CVE-2023-5340 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 1.24% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

1.24%

65.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-74

Affected Software

Vendor	Product	Versions
Fivestarplugins	Five Star Restaurant Menu	< 2.4.11

References

https://wpscan.com/vulnerability/91a5847a-62e7-4b98-a554-5eecb6a06e5bExploit, Third Party Advisory
https://wpscan.com/vulnerability/91a5847a-62e7-4b98-a554-5eecb6a06e5bExploit, Third Party Advisory

Timeline

Published: Nov 20, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-5340?

How severe is CVE-2023-5340?

CVE-2023-5340 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.24% probability of exploitation in the next 30 days.

How do I fix CVE-2023-5340?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-5340?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST