CVE-2026-71426 GetSimple CMS: Authenticated Stored Local File Inclusion (LFI) via page "template" field
Authenticated users can exploit a path traversal flaw in GetSimple CMS to include arbitrary local files, potentially leading to remote code execution.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-71426?
CVE-2026-71426 is a high-severity path traversal vulnerability in GetSimpleCMS-CE, published on 1 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
GetSimple CMS is a content management system (CMS), and GetSimple CMS CE is the community edition of that CMS. In versions 3.3.22 and prior, an authenticated user with page-editing rights can store an arbitrary filesystem path in a page's template attribute. On the public front-end, this value is passed unsanitized to a PHP include() when the page is rendered. Because the include path is never confined, this allows directory-traversal Local File Inclusion: arbitrary local files are included (and, if they contain PHP, executed) when any visitor requests the page. At time of publication, there are no publicly available patches.
Which versions are affected by CVE-2026-71426?
How do I fix CVE-2026-71426?
No fix has been published for CVE-2026-71426 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-71426 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-71426 exists.
Sources
Also known as GHSA-559q-hqrv-m84x.