CVE-2023-1984: A vulnerability classified as critical was found in SourceCodester Complaint Management System 1.0

This month

MEDIUM 6.3DOWNGRADE

CVE-2023-1984 is a medium-severity flaw (CVSS 6.3) affecting complaint management system. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability classified as critical was found in SourceCodester Complaint Management System 1.0. This vulnerability affects unknown code of the file /users/check_availability.php of the component POST Parameter Handler. The manipulation of the argument email leads to sql injection. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-225532.

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 44%)
CISA exploited list	No
Weakness	CWE-89
Published	2023-04-11
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: complaint management system project

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

Am I affected?

Timeline

2023-04-11 18:15 UTCPublished CVE record published
2026-06-17 05:29 UTCUpdated Record last modified

complaint management system project complaint management 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 complaint-management-system || rpm -q complaint-management-system || complaint-management-system --version

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

apt-cache madison complaint-management-system sudo apt install complaint-management-system=<VERSION_BEFORE_1.0> sudo apt-mark hold complaint-management-system

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

dnf --showduplicates list complaint-management-system sudo dnf downgrade complaint-management-system-<VERSION_BEFORE_1.0> sudo dnf versionlock add complaint-management-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-2023-1984?

complaint management system: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-1984 being exploited?

CVE-2023-1984 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-2023-1984 affect?

CVE-2023-1984 affects complaint management system. Severity is medium (CVSS 6.3). A vulnerability classified as critical was found in SourceCodester Complaint Management System 1.0. This vulnerability affects unknown code of the file /users/check_availability.php of the component POST Parameter Handler. The manipulation

How urgent is CVE-2023-1984?

Priority 41/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

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References

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