CVE-2023-22626: PgHero before 3.1.0 allows Information Disclosure via EXPLAIN because query results may be present in an error

This week

HIGH 7.5REMOTEUPGRADE

CVE-2023-22626 is a high-severity flaw (CVSS 7.5) affecting pghero. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

PgHero before 3.1.0 allows Information Disclosure via EXPLAIN because query results may be present in an error message. (Depending on database user privileges, this may only be information from the database, or may be information from file contents on the database server.)

Why this priority

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

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	0.8% (top 42%)
CISA exploited list	No
Weakness	CWE-209
Published	2023-01-05
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: pghero project

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

Am I affected?

Timeline

2023-01-05 08:15 UTCPublished CVE record published
2026-06-17 05:35 UTCUpdated Record last modified

pghero project pghero UPGRADE

Affected: >= 0.1.1 and < 3.1.0

Fixed in: 3.1.0

Safe to downgrade to: a release before 0.1.1

1. Check installed version

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

2. UPGRADE to 3.1.0 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade pghero

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 0.1.1 (Debian / Ubuntu)

apt-cache madison pghero sudo apt install pghero=<VERSION_BEFORE_0.1.1> sudo apt-mark hold pghero

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

dnf --showduplicates list pghero sudo dnf downgrade pghero-<VERSION_BEFORE_0.1.1> sudo dnf versionlock add pghero

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-2023-22626?

pghero: upgrade to 3.1.0. Exact commands for each OS are on this page.

Is CVE-2023-22626 being exploited?

CVE-2023-22626 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-2023-22626 affect?

CVE-2023-22626 affects pghero. Severity is high (CVSS 7.5). PgHero before 3.1.0 allows Information Disclosure via EXPLAIN because query results may be present in an error message. (Depending on database user privileges, this may only be information from the database, or may be information from file

How urgent is CVE-2023-22626?

Priority 51/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

References

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