CVE-2026-27146: GetSimple CMS is a content management system

Q: How do I fix CVE-2026-27146?

getsimple cms: upgrade to newer than 3.3.22. Exact commands for each OS are on this page.

Q: Is CVE-2026-27146 being exploited?

CVE-2026-27146 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-27146 affect?

CVE-2026-27146 affects getsimple cms. Severity is medium (CVSS 4.5). GetSimple CMS is a content management system. All versions of GetSimple CMS do not implement CSRF protection on the administrative file upload endpoint. As a result, an attacker can craft a malicious web page that silently triggers a file u

Q: How urgent is CVE-2026-27146?

Priority 23/100. Public exploit reference

Routine

MEDIUM 4.5UPGRADE

CVE-2026-27146 is a medium-severity flaw (CVSS 4.5) 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 do not implement CSRF protection on the administrative file upload endpoint. As a result, an attacker can craft a malicious web page that silently triggers a file upload request from an authenticated victim’s browser. The request is accepted without requiring a CSRF token or origin validation. This allows an attacker to upload arbitrary files to the application without th

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	4.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	Required
EPSS exploit chance	0.2% (top 90%)
CISA exploited list	No
Weakness	CWE-352, CWE-434
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 UPGRADE

Affected: <= 3.3.22

Fixed in: newer than 3.3.22

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 3.3.22 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade getsimple-cms

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade getsimple-cms

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-2026-27146?

getsimple cms: upgrade to newer than 3.3.22. Exact commands for each OS are on this page.

Is CVE-2026-27146 being exploited?

CVE-2026-27146 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-2026-27146 affect?

CVE-2026-27146 affects getsimple cms. Severity is medium (CVSS 4.5). GetSimple CMS is a content management system. All versions of GetSimple CMS do not implement CSRF protection on the administrative file upload endpoint. As a result, an attacker can craft a malicious web page that silently triggers a file u

How urgent is CVE-2026-27146?

Priority 23/100. Public exploit reference

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-2026-27202 HIGH 7.5 DOWNGRADE 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

References

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