CVE-2026-27202: GetSimple CMS is a content management system

This week

HIGH 7.5REMOTEDOWNGRADE

CVE-2026-27202 is a high-severity flaw (CVSS 7.5) affecting getsimple cms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

GetSimple CMS is a content management system. All versions of GetSimple CMS have a flaw in the Uploaded Files feature that allows for arbitrary file reads. This issue has not been fixed at the time of publication.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 52%)
CISA exploited list	No
Weakness	CWE-22, CWE-23
Published	2026-02-21
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: getsimple-ce

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

Am I affected?

Timeline

2026-02-21 00:16 UTCPublished CVE record published
2026-06-17 10:26 UTCUpdated Record last modified

getsimple-ce getsimple cms DOWNGRADE

Affected: 3.3.22

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.3.22

1. Check installed version

apt-cache policy getsimple-cms || rpm -q getsimple-cms || getsimple-cms --version

2. No fixed release: DOWNGRADE to a release before 3.3.22 (Debian / Ubuntu)

apt-cache madison getsimple-cms sudo apt install getsimple-cms=<VERSION_BEFORE_3.3.22> sudo apt-mark hold getsimple-cms

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

dnf --showduplicates list getsimple-cms sudo dnf downgrade getsimple-cms-<VERSION_BEFORE_3.3.22> sudo dnf versionlock add getsimple-cms

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-2026-27202?

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

Is CVE-2026-27202 being exploited?

CVE-2026-27202 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-2026-27202 affect?

CVE-2026-27202 affects getsimple cms. Severity is high (CVSS 7.5). GetSimple CMS is a content management system. All versions of GetSimple CMS have a flaw in the Uploaded Files feature that allows for arbitrary file reads. This issue has not been fixed at the time of publication.

How urgent is CVE-2026-27202?

Priority 48/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-26351 MEDIUM 4.8 UPGRADE GetSimpleCMS Community Edition (CE) versions prior to 3.3.22 (3.3.16 tested) contains a stored cross-site scri
CVE-2026-28495 CRITICAL 9.6 UPGRADE GetSimple CMS is a content management system
CVE-2026-27161 HIGH 7.5 UPGRADE GetSimple CMS is a content management system
CVE-2026-27147 MEDIUM 5.4 UPGRADE GetSimple CMS is a content management system
CVE-2026-27146 MEDIUM 4.5 UPGRADE GetSimple CMS is a content management system

References

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