CVE-2026-56662
GetSimple CMS is a content management system (CMS), and GetSimple CMS CE is the community edition…
- Risk score
- 65/100
- CVSS
- 9.6 v3.1
- Exploit chance (30 days)
- 0.2%
- Published
- 1 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- GetSimple CMS is a content management system (CMS), and GetSimple CMS CE is the community edition of that CMS. Prior to version 1.5, the UpdateCE update form contained no anti-CSRF token, and the POST handler performed no token or request-origin verification. A remote attacker can host a page that auto-submits a forge…
- Affected
- See advisory
- Fix
- Upgrade the product to 1.5 or later.
- Exploitation
- No known exploitation
Why it is Amber
- CVSS 9.6 critical
- Remotely exploitable without logging in
References
Original description
GetSimple CMS is a content management system (CMS), and GetSimple CMS CE is the community edition of that CMS. Prior to version 1.5, the UpdateCE update form contained no anti-CSRF token, and the POST handler performed no token or request-origin verification. A remote attacker can host a page that auto-submits a forged POST to the update endpoint; when an authenticated administrator visits it, the server performs an attacker-directed download-and-deploy operation in the administrator's session — with no further interaction. Because the deployed content is executed (see the related ZIP-extraction advisory), this yields remote code execution. The url field is additionally written into the form unescaped, providing a secondary HTML-injection sink via a malicious upgrade.json. This issue has been patched in version 1.5.
Last activity 1 Oct 2026. Patch Forecast updates every hour.