CVE-2022-27428: A stored cross-site scripting (XSS) vulnerability in /index.php/album/add of GalleryCMS v2.0 allows attackers

Routine

MEDIUM 5.4DOWNGRADE

CVE-2022-27428 is a medium-severity flaw (CVSS 5.4) affecting gallerycms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A stored cross-site scripting (XSS) vulnerability in /index.php/album/add of GalleryCMS v2.0 allows attackers to execute arbitrary web scripts or HTML via a crafted payload injected into the album_name parameter.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.5% (top 58%)
CISA exploited list	No
Weakness	CWE-79
Published	2022-04-25
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: gallerycms project

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

Am I affected?

Timeline

2022-04-25 13:15 UTCPublished CVE record published
2026-06-17 04:37 UTCUpdated Record last modified

gallerycms project gallerycms DOWNGRADE

Affected: 2.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2.0 (Debian / Ubuntu)

apt-cache madison gallerycms sudo apt install gallerycms=<VERSION_BEFORE_2.0> sudo apt-mark hold gallerycms

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

dnf --showduplicates list gallerycms sudo dnf downgrade gallerycms-<VERSION_BEFORE_2.0> sudo dnf versionlock add gallerycms

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-2022-27428?

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

Is CVE-2022-27428 being exploited?

CVE-2022-27428 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-2022-27428 affect?

CVE-2022-27428 affects gallerycms. Severity is medium (CVSS 5.4). A stored cross-site scripting (XSS) vulnerability in /index.php/album/add of GalleryCMS v2.0 allows attackers to execute arbitrary web scripts or HTML via a crafted payload injected into the album_name parameter.

How urgent is CVE-2022-27428?

Priority 34/100. Public exploit reference

Software pages

PHP vulnerabilities

References

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