CVE-2022-30450: A Remote Code Execution (RCE) vulnerability exists in waimairen 9.1 via wx.php

This week

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2022-30450 is a critical-severity flaw (CVSS 9.8) affecting waimairencms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A Remote Code Execution (RCE) vulnerability exists in waimairen 9.1 via wx.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	21.6% (top 2%)
CISA exploited list	No
Published	2022-05-11
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: waimairencms project

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

Am I affected?

Timeline

2022-05-11 19:15 UTCPublished CVE record published
2026-06-17 04:43 UTCUpdated Record last modified

waimairencms project waimairencms DOWNGRADE

Affected: 9.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 9.1

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 9.1 (Debian / Ubuntu)

apt-cache madison waimairencms sudo apt install waimairencms=<VERSION_BEFORE_9.1> sudo apt-mark hold waimairencms

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

dnf --showduplicates list waimairencms sudo dnf downgrade waimairencms-<VERSION_BEFORE_9.1> sudo dnf versionlock add waimairencms

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 ELN · luksmeta · FIXED · 11-3.eln159 · FEDORA-2026-5176083b78 · source

sudo dnf upgrade --advisory=FEDORA-2026-5176083b78

Fedora 46 · openscad · FIXED · 2021.01-34.fc46 · FEDORA-2026-faf1721128 · source

sudo dnf upgrade --advisory=FEDORA-2026-faf1721128

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-2022-30450?

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

Is CVE-2022-30450 being exploited?

CVE-2022-30450 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-2022-30450 affect?

CVE-2022-30450 affects waimairencms. Severity is critical (CVSS 9.8). A Remote Code Execution (RCE) vulnerability exists in waimairen 9.1 via wx.php

How urgent is CVE-2022-30450?

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

Related CVEs

CVE-2022-30451 HIGH 8.8 DOWNGRADE An authenticated user could execute code via a SQLi vulnerability in waimairenCMS before version 9.1.

References

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