CVE-2022-31026: Trilogy is a client library for MySQL

Q: How do I fix CVE-2022-31026?

trilogy: upgrade to 2.1.1. Exact commands for each OS are on this page.

Q: Is CVE-2022-31026 being exploited?

CVE-2022-31026 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2022-31026 affect?

CVE-2022-31026 affects trilogy. Severity is medium (CVSS 5.9). Trilogy is a client library for MySQL. When authenticating, a malicious server could return a specially crafted authentication packet, causing the client to read and return up to 12 bytes of data from an uninitialized variable in stack memo

Q: How urgent is CVE-2022-31026?

Priority 47/100. Remotely exploitable, no login, no user action; On your watchlist

This month

MEDIUM 5.9REMOTEWATCHLISTUPGRADE

CVE-2022-31026 is a medium-severity flaw (CVSS 5.9) affecting trilogy. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Trilogy is a client library for MySQL. When authenticating, a malicious server could return a specially crafted authentication packet, causing the client to read and return up to 12 bytes of data from an uninitialized variable in stack memory. Users of the trilogy gem should upgrade to version 2.1.1 This issue can be avoided by only connecting to trusted servers.

Why this priority

Remotely exploitable, no login, no user action
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	5.9 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	1.1% (top 35%)
CISA exploited list	No
Weakness	CWE-908
Published	2022-06-09
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: trilogy project

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

Am I affected?

Timeline

2022-06-09 13:15 UTCPublished CVE record published
2026-06-17 04:44 UTCUpdated Record last modified

trilogy project trilogy UPGRADE

Affected: < 2.1.1

Fixed in: 2.1.1

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 2.1.1 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade trilogy

Note

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

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-2022-31026?

trilogy: upgrade to 2.1.1. Exact commands for each OS are on this page.

Is CVE-2022-31026 being exploited?

CVE-2022-31026 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-2022-31026 affect?

CVE-2022-31026 affects trilogy. Severity is medium (CVSS 5.9). Trilogy is a client library for MySQL. When authenticating, a malicious server could return a specially crafted authentication packet, causing the client to read and return up to 12 bytes of data from an uninitialized variable in stack memo

How urgent is CVE-2022-31026?

Priority 47/100. Remotely exploitable, no login, no user action; On your watchlist

Software pages

MySQL vulnerabilities

References

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