CVE-2026-48774: ProxySQL is a proxy for MySQL and its forks, as well as PostgreSQL

This week

HIGH 7.5REMOTEWATCHLISTUPGRADE

CVE-2026-48774 is a high-severity flaw (CVSS 7.5) affecting proxysql. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

ProxySQL is a proxy for MySQL and its forks, as well as PostgreSQL. In versions 3.0.0 through 3.0.8, ProxySQL's GenAI/MCP `run_sql_readonly` tool violates its documented read-only contract for MySQL targets. The tool validates only the full input string with a substring blacklist and first-keyword allowlist, but then executes the entire SQL string on a backend connection created with `CLIENT_MULTI_STATEMENTS`. As a result, a caller can submit a r

Why this priority

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

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 67%)
CISA exploited list	No
Weakness	CWE-20
Published	2026-06-19
Last modified	2026-10-25

Publisher (CNA): GitHub, Inc. · Vendor: proxysql

Last updated 2026-10-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-19 20:16 UTCPublished CVE record published
2026-10-25 23:10 UTCUpdated Record last modified

proxysql proxysql UPGRADE

Affected: >= 4.0.6 and < 4.0.9

Fixed in: 4.0.9

Safe to downgrade to: a release before 4.0.6

1. Check installed version

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

2. UPGRADE to 4.0.9 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade proxysql

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade proxysql

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 4.0.6 (Debian / Ubuntu)

apt-cache madison proxysql sudo apt install proxysql=<VERSION_BEFORE_4.0.6> sudo apt-mark hold proxysql

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list proxysql sudo dnf downgrade proxysql-<VERSION_BEFORE_4.0.6> sudo dnf versionlock add proxysql

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-2026-48774?

proxysql: upgrade to 4.0.9. Exact commands for each OS are on this page.

Is CVE-2026-48774 being exploited?

CVE-2026-48774 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-2026-48774 affect?

CVE-2026-48774 affects proxysql. Severity is high (CVSS 7.5). ProxySQL is a proxy for MySQL and its forks, as well as PostgreSQL. In versions 3.0.0 through 3.0.8, ProxySQL's GenAI/MCP `run_sql_readonly` tool violates its documented read-only contract for MySQL targets. The tool validates only the full

How urgent is CVE-2026-48774?

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

Software pages

MySQL vulnerabilities · PostgreSQL vulnerabilities

Related CVEs

CVE-2026-48773 CRITICAL 9.8 UPGRADE ProxySQL is a proxy for MySQL and its forks, as well as PostgreSQL
CVE-2026-48772 CRITICAL 10.0 UPGRADE ProxySQL is a proxy for MySQL and its forks, as well as PostgreSQL

References

← Back to latest CVEs