CVE-2022-32277: Squiz Matrix CMS 6.20 is vulnerable to an Insecure Direct Object Reference caused by failure to correctly vali

Routine

MEDIUM 5.3REMOTEDOWNGRADE

CVE-2022-32277 is a medium-severity flaw (CVSS 5.3) affecting matrix. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Squiz Matrix CMS 6.20 is vulnerable to an Insecure Direct Object Reference caused by failure to correctly validate authorization when submitting a request to change a user's contact details. NOTE: this is disputed by both the vendor and the original discoverer because it is a site-specific finding, not a finding about the Squiz Matrix CMS product.

Why this priority

Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 53%)
CISA exploited list	No
Weakness	CWE-639
Published	2022-09-06
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: squiz

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

Am I affected?

Timeline

2022-09-06 20:15 UTCPublished CVE record published
2026-06-17 04:47 UTCUpdated Record last modified

squiz matrix DOWNGRADE

Affected: 6.20

Fixed in: no fixed release known

Safe to downgrade to: a release before 6.20

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 6.20 (Debian / Ubuntu)

apt-cache madison matrix sudo apt install matrix=<VERSION_BEFORE_6.20> sudo apt-mark hold matrix

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

dnf --showduplicates list matrix sudo dnf downgrade matrix-<VERSION_BEFORE_6.20> sudo dnf versionlock add matrix

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-2022-32277?

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

Is CVE-2022-32277 being exploited?

CVE-2022-32277 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-2022-32277 affect?

CVE-2022-32277 affects matrix. Severity is medium (CVSS 5.3). Squiz Matrix CMS 6.20 is vulnerable to an Insecure Direct Object Reference caused by failure to correctly validate authorization when submitting a request to change a user's contact details. NOTE: this is disputed by both the vendor and the

How urgent is CVE-2022-32277?

Priority 35/100. Remotely exploitable, no login, no user action

References

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