CVE-2022-27128: An incorrect access control issue at /admin/run_ajax.php in zbzcms v1.0 allows attackers to arbitrarily add ad

This month

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2022-27128 is a critical-severity flaw (CVSS 9.8) affecting zbzcms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An incorrect access control issue at /admin/run_ajax.php in zbzcms v1.0 allows attackers to arbitrarily add administrator accounts.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.2% (top 33%)
CISA exploited list	No
Published	2022-04-10
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: zbzcms

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

Am I affected?

Timeline

2022-04-10 21:15 UTCPublished CVE record published
2026-06-17 04:36 UTCUpdated Record last modified

zbzcms zbzcms DOWNGRADE

Affected: 1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison zbzcms sudo apt install zbzcms=<VERSION_BEFORE_1.0> sudo apt-mark hold zbzcms

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

dnf --showduplicates list zbzcms sudo dnf downgrade zbzcms-<VERSION_BEFORE_1.0> sudo dnf versionlock add zbzcms

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-2022-27128?

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

Is CVE-2022-27128 being exploited?

CVE-2022-27128 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-2022-27128 affect?

CVE-2022-27128 affects zbzcms. Severity is critical (CVSS 9.8). An incorrect access control issue at /admin/run_ajax.php in zbzcms v1.0 allows attackers to arbitrarily add administrator accounts.

How urgent is CVE-2022-27128?

Priority 56/100. Critical severity; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

Related CVEs

CVE-2022-27133 CRITICAL 9.1 DOWNGRADE zbzcms v1.0 was discovered to contain an arbitrary file deletion vulnerability via /include/up.php.
CVE-2022-27131 CRITICAL 9.8 DOWNGRADE An arbitrary file upload vulnerability at /zbzedit/php/zbz.php in zbzcms v1.0 allows attackers to execute arbi
CVE-2022-27129 CRITICAL 9.8 DOWNGRADE An arbitrary file upload vulnerability at /admin/ajax.php in zbzcms v1.0 allows attackers to execute arbitrary
CVE-2022-27127 MEDIUM 6.5 DOWNGRADE zbzcms v1.0 was discovered to contain a SQL injection vulnerability via the id parameter at /php/ajax.php.
CVE-2022-27126 CRITICAL 9.8 DOWNGRADE zbzcms v1.0 was discovered to contain a SQL injection vulnerability via the art parameter at /include/make.php

References

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