CVE-2022-26272: A remote code execution (RCE) vulnerability in Ionize v1.0.8.1 allows attackers to execute arbitrary code via

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CRITICAL 9.8REMOTEDOWNGRADE

CVE-2022-26272 is a critical-severity flaw (CVSS 9.8) affecting ionize. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A remote code execution (RCE) vulnerability in Ionize v1.0.8.1 allows attackers to execute arbitrary code via a crafted string written to the file application/config/config.php.

Why this priority

Critical severity
EPSS top 2%: very likely to be exploited
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	22.5% (top 2%)
CISA exploited list	No
Published	2022-03-24
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: ionizecms

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

Am I affected?

Timeline

2022-03-24 22:15 UTCPublished CVE record published
2026-06-17 04:34 UTCUpdated Record last modified

ionizecms ionize DOWNGRADE

Affected: 1.0.8.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0.8.1

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.0.8.1 (Debian / Ubuntu)

apt-cache madison ionize sudo apt install ionize=<VERSION_BEFORE_1.0.8.1> sudo apt-mark hold ionize

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

dnf --showduplicates list ionize sudo dnf downgrade ionize-<VERSION_BEFORE_1.0.8.1> sudo dnf versionlock add ionize

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.

Exact fixes by distribution

A distro patch exists: prefer upgrading over downgrading.

Fedora 46 · nemo · FIXED · 6.8.0-1.fc46 · FEDORA-2026-0edead723f · source

sudo dnf upgrade --advisory=FEDORA-2026-0edead723f

Fedora ELN · composer · FIXED · 2.11.1-1.eln159 · FEDORA-2026-cb4f992456 · source

sudo dnf upgrade --advisory=FEDORA-2026-cb4f992456

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-2022-26272?

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

Is CVE-2022-26272 being exploited?

CVE-2022-26272 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-2022-26272 affect?

CVE-2022-26272 affects ionize. Severity is critical (CVSS 9.8). A remote code execution (RCE) vulnerability in Ionize v1.0.8.1 allows attackers to execute arbitrary code via a crafted string written to the file application/config/config.php.

How urgent is CVE-2022-26272?

Priority 69/100. Critical severity; EPSS top 2%: 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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