CVE-2023-1100: A vulnerability classified as critical has been found in SourceCodester Online Catering Reservation System 1.0

This month

MEDIUM 6.3DOWNGRADE

CVE-2023-1100 is a medium-severity flaw (CVSS 6.3) affecting online catering reservation system. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability classified as critical has been found in SourceCodester Online Catering Reservation System 1.0. This affects an unknown part of the file /reservation/add_message.php of the component POST Parameter Handler. The manipulation of the argument fullname leads to sql injection. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.8% (top 45%)
CISA exploited list	No
Weakness	CWE-89
Published	2023-02-28
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: online catering reservation system project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-02-28 21:15 UTCPublished CVE record published
2026-06-17 05:27 UTCUpdated Record last modified

online catering reservation system project online catering reservation system DOWNGRADE

Affected: 1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

apt-cache policy online-catering-reservation-system || rpm -q online-catering-reservation-system || online-catering-reservation-system --version

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison online-catering-reservation-system sudo apt install online-catering-reservation-system=<VERSION_BEFORE_1.0> sudo apt-mark hold online-catering-reservation-system

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list online-catering-reservation-system sudo dnf downgrade online-catering-reservation-system-<VERSION_BEFORE_1.0> sudo dnf versionlock add online-catering-reservation-system

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-1100?

online catering reservation system: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-1100 being exploited?

CVE-2023-1100 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-1100 affect?

CVE-2023-1100 affects online catering reservation system. Severity is medium (CVSS 6.3). A vulnerability classified as critical has been found in SourceCodester Online Catering Reservation System 1.0. This affects an unknown part of the file /reservation/add_message.php of the component POST Parameter Handler. The manipulation

How urgent is CVE-2023-1100?

Priority 41/100. Public exploit reference

Software pages

PHP vulnerabilities

References

← Back to latest CVEs