CVE-2023-5340: 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 Inject

critical Affects five-star-restaurant-menu (WordPress plugin). Feed 2026.10.29.1, updated 2026-10-28; published ; advisory modified .

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 Inject

Package
five-star-restaurant-menu (WordPress plugin) WordPress
Affected versions
<2.4.11
Fixed in
2.4.11
Severity
critical  CVSS 9.8
Exploitation
not on CISA KEV · EPSS 1% (69.2th percentile)
Published
2023-11-20
Source
nvd

References

CWE-74
NVD recordfive-star-restaurant-menu (WordPress plugin) advisories

Am I affected?

Find out in one command. phpwarden checks your WordPress install against this advisory and 20,000+ others, ranked by real-world exploitation (CISA KEV + EPSS). Free, offline, open data.

# one-time install
pip install phpwarden

# then
phpwarden wordpress /var/www/html

Or keep it checked automatically with the GitHub Action or a nightly cron; see WordPress docs.

Install docs   How findings are ranked

Related advisories