CVE-2023-0663: A vulnerability was found in Calendar Event Management System 2.3.0

This week

HIGH 7.3REMOTEDOWNGRADE

CVE-2023-0663 is a high-severity flaw (CVSS 7.3) affecting calendar event management system. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability was found in Calendar Event Management System 2.3.0. It has been rated as critical. This issue affects some unknown processing of the component Login Page. The manipulation of the argument name/pwd leads to sql injection. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-220175.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	7.3 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.9% (top 41%)
CISA exploited list	No
Weakness	CWE-89
Published	2023-02-03
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: calendar event 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

2023-02-03 21:15 UTCPublished CVE record published
2026-06-17 05:26 UTCUpdated Record last modified

calendar event management system project calendar event management system DOWNGRADE

Affected: 2.3.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.3.0

1. Check installed version

apt-cache policy calendar-event-management-system || rpm -q calendar-event-management-system || calendar-event-management-system --version

2. No fixed release: DOWNGRADE to a release before 2.3.0 (Debian / Ubuntu)

apt-cache madison calendar-event-management-system sudo apt install calendar-event-management-system=<VERSION_BEFORE_2.3.0> sudo apt-mark hold calendar-event-management-system

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

dnf --showduplicates list calendar-event-management-system sudo dnf downgrade calendar-event-management-system-<VERSION_BEFORE_2.3.0> sudo dnf versionlock add calendar-event-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-2023-0663?

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

Is CVE-2023-0663 being exploited?

CVE-2023-0663 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-2023-0663 affect?

CVE-2023-0663 affects calendar event management system. Severity is high (CVSS 7.3). A vulnerability was found in Calendar Event Management System 2.3.0. It has been rated as critical. This issue affects some unknown processing of the component Login Page. The manipulation of the argument name/pwd leads to sql injection. Th

How urgent is CVE-2023-0663?

Priority 50/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2023-0675 MEDIUM 6.3 DOWNGRADE A vulnerability, which was classified as critical, was found in Calendar Event Management System 2.3.0

References

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