CVE-2019-7731: MyWebSQL 3.7 has a remote code execution (RCE) vulnerability after an attacker writes shell code into the data

This week

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2019-7731 is a critical-severity flaw (CVSS 9.8) affecting mywebsql. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

MyWebSQL 3.7 has a remote code execution (RCE) vulnerability after an attacker writes shell code into the database, and executes the Backup Database function with a .php filename for the backup's archive file.

Why this priority

Critical severity
EPSS top 9%: very likely to be exploited
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	4.2% (top 9%)
CISA exploited list	No
Weakness	CWE-706
Published	2019-02-11
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: mywebsql

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

Am I affected?

Timeline

2019-02-11 17:29 UTCPublished CVE record published
2026-06-17 02:40 UTCUpdated Record last modified

mywebsql mywebsql DOWNGRADE

Affected: 3.7

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.7

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 3.7 (Debian / Ubuntu)

apt-cache madison mywebsql sudo apt install mywebsql=<VERSION_BEFORE_3.7> sudo apt-mark hold mywebsql

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

dnf --showduplicates list mywebsql sudo dnf downgrade mywebsql-<VERSION_BEFORE_3.7> sudo dnf versionlock add mywebsql

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-2019-7731?

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

Is CVE-2019-7731 being exploited?

CVE-2019-7731 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-2019-7731 affect?

CVE-2019-7731 affects mywebsql. Severity is critical (CVSS 9.8). MyWebSQL 3.7 has a remote code execution (RCE) vulnerability after an attacker writes shell code into the database, and executes the Backup Database function with a .php filename for the backup's archive file.

How urgent is CVE-2019-7731?

Priority 67/100. Critical severity; EPSS top 9%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

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References

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