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CVE-2026-55744— Cotonti CSRF in PFS allows forced arbitrary file upload

CVSS 8.1 · High EPSS 0.18% · P7

Possible ATT&CK Techniques 1AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProductVersion RangeStatus
CotontiCotonti1.0.0affected
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I. Basic Information for CVE-2026-55744

Vulnerability Information
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Vulnerability Title
Cotonti CSRF in PFS allows forced arbitrary file upload
Source: NVD (National Vulnerability Database)
Vulnerability 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. A remote attacker who lures an authenticated user into visiting a malicious page can force the browser to submit a forged multipart request that uploads arbitrary files into the victim's PFS storage.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
跨站请求伪造(CSRF)
Source: NVD (National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
CotontiCotonti 1.0.0 -

II. Public POCs for CVE-2026-55744

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III. Intelligence Information for CVE-2026-55744

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Vendor Pages for CVE-2026-55744 (1)

Other References for CVE-2026-55744 (1)

Same Patch Batch · Cotonti · 2026-06-18 · 5 CVEs total

CVE-2026-557429.6 CRITICALCotonti CSRF in admin.rights.php allows privilege escalation
CVE-2026-557418.8 HIGHCotonti CSRF in admin.config.php allows unauthorized configuration changes
CVE-2026-557467.6 HIGHCotonti stored XSS via PFS folder title
CVE-2026-557455.4 MEDIUMCotonti CSRF in PFS folder edit allows unauthorized folder modification

IV. Related Vulnerabilities

Same product: Cotonti
Same vendor: Cotonti
Same weakness: CWE-352

V. Comments for CVE-2026-55744

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