CVE-2020-19821: A SQL injection vulnerability in admin.php of DOYOCMS 2.3 allows attackers to execute arbitrary SQL commands v

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HIGH 8.8DOWNGRADE

CVE-2020-19821 is a high-severity flaw (CVSS 8.8) affecting doyocms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A SQL injection vulnerability in admin.php of DOYOCMS 2.3 allows attackers to execute arbitrary SQL commands via the orders[] parameter.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.9% (top 41%)
CISA exploited list	No
Weakness	CWE-89
Published	2021-08-26
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: wdoyo

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

Am I affected?

Timeline

2021-08-26 03:15 UTCPublished CVE record published
2026-06-17 02:59 UTCUpdated Record last modified

wdoyo doyocms DOWNGRADE

Affected: 2.3

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.3

1. Check installed version

apt-cache policy doyocms || rpm -q doyocms || doyocms --version

2. No fixed release: DOWNGRADE to a release before 2.3 (Debian / Ubuntu)

apt-cache madison doyocms sudo apt install doyocms=<VERSION_BEFORE_2.3> sudo apt-mark hold doyocms

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

dnf --showduplicates list doyocms sudo dnf downgrade doyocms-<VERSION_BEFORE_2.3> sudo dnf versionlock add doyocms

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-2020-19821?

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

Is CVE-2020-19821 being exploited?

CVE-2020-19821 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-2020-19821 affect?

CVE-2020-19821 affects doyocms. Severity is high (CVSS 8.8). A SQL injection vulnerability in admin.php of DOYOCMS 2.3 allows attackers to execute arbitrary SQL commands via the orders[] parameter.

How urgent is CVE-2020-19821?

Priority 51/100. High severity; Public exploit reference

Software pages

PHP vulnerabilities

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References

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