CVE-2026-55744 Cotonti CSRF in PFS allows forced arbitrary file upload
Attackers can force users to upload arbitrary files to the Personal File Storage module due to missing CSRF token validation.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-55744?
CVE-2026-55744 is a high-severity vulnerability in Cotonti, published on 18 Jun 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Cotonti 1.0.0 (master branch, commit f43f1fc3) is vulnerable to Cross-Site Request Forgery in the Personal File Storage (PFS) module. In modules/pfs/inc/pfs.main.php, the file upload action ('a=upload') processes uploaded files without calling cot_check_xg to validate the anti-CSRF token, even though sibling actions such as 'delete' (line 272) do.
Weakness: CWE-352
Which versions are affected by CVE-2026-55744?
2 open source packages ship an affected version, including cotonti/cotonti.
| Package | Affected | Fixed in |
|---|---|---|
cotonti/cotonti Packagist | All versions to 1.0.0 | None |
cotonti/cotonti Packagist | All versions to 1.0.0 | None |
How do I fix CVE-2026-55744?
No fix has been published for CVE-2026-55744 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-55744 being exploited?
There is no known exploitation of CVE-2026-55744 in the wild and no public exploit code.
Sources
Also known as GHSA-wx35-cv59-9gwr.