CVE-2020-23980: DesignMasterEvents Conference management 1.0.0 allows SQL Injection via the username field on the administrato

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CRITICAL 9.8REMOTEDOWNGRADE

CVE-2020-23980 is a critical-severity flaw (CVSS 9.8) affecting conference management. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

DesignMasterEvents Conference management 1.0.0 allows SQL Injection via the username field on the administrator login page.

Why this priority

Critical 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	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.2% (top 18%)
CISA exploited list	No
Weakness	CWE-89
Published	2020-08-27
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: designmasterevents

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

Am I affected?

Timeline

2020-08-27 13:15 UTCPublished CVE record published
2026-06-17 03:05 UTCUpdated Record last modified

designmasterevents conference management DOWNGRADE

Affected: 1.0.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0.0

1. Check installed version

apt-cache policy conference-management || rpm -q conference-management || conference-management --version

2. No fixed release: DOWNGRADE to a release before 1.0.0 (Debian / Ubuntu)

apt-cache madison conference-management sudo apt install conference-management=<VERSION_BEFORE_1.0.0> sudo apt-mark hold conference-management

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

dnf --showduplicates list conference-management sudo dnf downgrade conference-management-<VERSION_BEFORE_1.0.0> sudo dnf versionlock add conference-management

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-2020-23980?

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

Is CVE-2020-23980 being exploited?

CVE-2020-23980 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-2020-23980 affect?

CVE-2020-23980 affects conference management. Severity is critical (CVSS 9.8). DesignMasterEvents Conference management 1.0.0 allows SQL Injection via the username field on the administrator login page.

How urgent is CVE-2020-23980?

Priority 65/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

References

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