Is CVE-2023-5340 actively exploited?

No active exploitation of CVE-2023-5340 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-5340 be exploited remotely?

Yes. CVE-2023-5340 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-5340?

CVE-2023-5340 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2023-5340

CRITICAL

CVE-2023-5340

CWE-74Published: November 20, 2023· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official 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.

NVD Source

Risk Analysis

The Five Star Restaurant Menu and Food Ordering plugin for WordPress is vulnerable to PHP Object Injection due to insecure unserialization of user-supplied data. An unauthenticated attacker can leverage this to execute arbitrary code if a suitable gadget chain exists.

No public exploit is known, and the vulnerability is not in the CISA KEV.

Recommended Action

Update the plugin to version 2.4.11 or higher to remediate the insecure deserialization.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2023-5340 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.