CVE-2023-1036: A vulnerability was found in SourceCodester Dental Clinic Appointment Reservation System 1.0

Routine

MEDIUM 4.3DOWNGRADE

CVE-2023-1036 is a medium-severity flaw (CVSS 4.3) affecting dental clinic appointment reservation system. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability was found in SourceCodester Dental Clinic Appointment Reservation System 1.0. It has been declared as problematic. This vulnerability affects unknown code of the file /APR/signup.php of the component POST Parameter Handler. The manipulation of the argument firstname leads to cross site scripting. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. VDB-221794 is the identifier assigne

Why this priority

Public exploit reference

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

Risk facts

CVSS score	4.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.8% (top 44%)
CISA exploited list	No
Weakness	CWE-79
Published	2023-02-26
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: dental clinic appointment 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

2023-02-26 12:15 UTCPublished CVE record published
2026-06-17 05:26 UTCUpdated Record last modified

dental clinic appointment reservation system project dental clinic appointment 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 dental-clinic-appointment-reservation-system || rpm -q dental-clinic-appointment-reservation-system || dental-clinic-appointment-reservation-system --version

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

apt-cache madison dental-clinic-appointment-reservation-system sudo apt install dental-clinic-appointment-reservation-system=<VERSION_BEFORE_1.0> sudo apt-mark hold dental-clinic-appointment-reservation-system

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

dnf --showduplicates list dental-clinic-appointment-reservation-system sudo dnf downgrade dental-clinic-appointment-reservation-system-<VERSION_BEFORE_1.0> sudo dnf versionlock add dental-clinic-appointment-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-2023-1036?

dental clinic appointment reservation system: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-1036 being exploited?

CVE-2023-1036 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-2023-1036 affect?

CVE-2023-1036 affects dental clinic appointment reservation system. Severity is medium (CVSS 4.3). A vulnerability was found in SourceCodester Dental Clinic Appointment Reservation System 1.0. It has been declared as problematic. This vulnerability affects unknown code of the file /APR/signup.php of the component POST Parameter Handler.

How urgent is CVE-2023-1036?

Priority 34/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2025-13267 MEDIUM 6.3 DOWNGRADE A vulnerability was detected in SourceCodester Dental Clinic Appointment Reservation System 1.0
CVE-2023-2824 LOW 3.5 DOWNGRADE A vulnerability was found in SourceCodester Dental Clinic Appointment Reservation System 1.0
CVE-2023-1037 HIGH 7.3 DOWNGRADE A vulnerability was found in SourceCodester Dental Clinic Appointment Reservation System 1.0

References

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