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CVE-2023-28666: The InPost Gallery WordPress plugin, in versions < 2.2.2, is affected by a reflected cross-site scripting vuln

33
Routine
MEDIUM 5.4UPGRADE

CVE-2023-28666 is a medium-severity flaw (CVSS 5.4) affecting inpost gallery. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The InPost Gallery WordPress plugin, in versions < 2.2.2, is affected by a reflected cross-site scripting vulnerability in the 'imgurl' parameter to the add_inpost_gallery_slide_item action, which can only be triggered by an authenticated user.

Why this priority

  • Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score5.4 (Medium)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededLow
User interactionRequired
EPSS exploit chance0.4% (top 63%)
CISA exploited listNo
WeaknessCWE-79
Published2023-03-22
Last modified2026-10-23
Publisher (CNA): Tenable Network Security, Inc. · Vendor: pluginus

Last updated 2026-10-23 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

pluginus inpost gallery UPGRADE
Affected: <= 2.1.4.1
Fixed in: newer than 2.1.4.1
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy inpost-gallery || rpm -q inpost-gallery || inpost-gallery --version
2. UPGRADE to newer than 2.1.4.1 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade inpost-gallery
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade inpost-gallery
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-2023-28666?

inpost gallery: upgrade to newer than 2.1.4.1. Exact commands for each OS are on this page.

Is CVE-2023-28666 being exploited?

CVE-2023-28666 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-2023-28666 affect?

CVE-2023-28666 affects inpost gallery. Severity is medium (CVSS 5.4). The InPost Gallery WordPress plugin, in versions < 2.2.2, is affected by a reflected cross-site scripting vulnerability in the 'imgurl' parameter to the add_inpost_gallery_slide_item action, which can only be triggered by an authenticated u

How urgent is CVE-2023-28666?

Priority 33/100. Public exploit reference

Software pages

WordPress vulnerabilities

References

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