CVE-2020-21400: SQL injection vulnerability in gaozhifeng PHPMyWind v.5.6 allows a remote attacker to execute arbitrary code v

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HIGH 7.2DOWNGRADE

CVE-2020-21400 is a high-severity flaw (CVSS 7.2) affecting phpmywind. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

SQL injection vulnerability in gaozhifeng PHPMyWind v.5.6 allows a remote attacker to execute arbitrary code via the id variable in the modify function.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	7.2 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	1.1% (top 34%)
CISA exploited list	No
Weakness	CWE-89
Published	2023-06-20
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: phpmywind

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

Am I affected?

Timeline

2023-06-20 15:15 UTCPublished CVE record published
2026-06-17 03:03 UTCUpdated Record last modified

phpmywind phpmywind DOWNGRADE

Affected: 5.6

Fixed in: no fixed release known

Safe to downgrade to: a release before 5.6

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 5.6 (Debian / Ubuntu)

apt-cache madison phpmywind sudo apt install phpmywind=<VERSION_BEFORE_5.6> sudo apt-mark hold phpmywind

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

dnf --showduplicates list phpmywind sudo dnf downgrade phpmywind-<VERSION_BEFORE_5.6> sudo dnf versionlock add phpmywind

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-2020-21400?

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

Is CVE-2020-21400 being exploited?

CVE-2020-21400 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-2020-21400 affect?

CVE-2020-21400 affects phpmywind. Severity is high (CVSS 7.2). SQL injection vulnerability in gaozhifeng PHPMyWind v.5.6 allows a remote attacker to execute arbitrary code via the id variable in the modify function.

How urgent is CVE-2020-21400?

Priority 47/100. High severity; Public exploit reference

Related CVEs

CVE-2020-21060 HIGH 8.8 DOWNGRADE SQL injection vulnerability found in PHPMyWind v.5.6 allows a remote attacker to gain privileges via the delet

References

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