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CVE

CVE-2026-53952

GetSimple CMS & GetSimpleCMS-CE have an Unauthenticated Admin Account Creation via Setup Logic Flaw
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CVE

CVE-2026-53952

GetSimple CMS & GetSimpleCMS-CE have an Unauthenticated Admin Account Creation via Setup Logic Flaw

GetSimple CMS is a content management system (CMS), and GetSimple CMS CE is the community edition of that CMS. A logic flaw in GetSimple CMS (v3.4.0a and below) and GetSimpleCMS-CE (v3.3.22 and below) allows unauthenticated attackers to create a new administrator account. The application features an automated security control designed to delete the sensitive admin/setup.php file post-installation. However, this control is neutralized by a self-exclusion bug within the deletion logic, leaving the setup script accessible for unauthorized account creation even after a legitimate installation is completed. As of time of publication, no known patched versions are available.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.8
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
C
H
U
-

Related Resources

No items found.

References

https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53952.json, https://github.com/GetSimpleCMS-CE/GetSimpleCMS-CE/security/advisories/GHSA-rw2c-w4mg-46g4, https://nvd.nist.gov/vuln/detail/CVE-2026-53952

Severity

9.8

CVSS Score
0
10

Basic Information

Base CVSS
9.8
EPSS Probability
0.00553%
EPSS Percentile
0.44478%
Introduced Version
0
Fix Available

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