CVE-2026-55746
HighCVSS 7.6Exploitation Probability (EPSS)
Low risk7th percentile - higher than 7% of all known CVEs
Summary
Cotonti 1.0.0 is vulnerable to stored Cross-Site Scripting in the Personal File Storage (PFS) module. A folder title (pff_title) is imported with the 'TXT' filter, which does not strip or encode HTML (the tag check in cot_import is disabled), so an authenticated user can store HTML/JavaScript in a folder title.
Risk Assessment
Stored XSS may allow malicious script execution in other users' browsers, potentially leading to session theft or account takeover.
Recommendation
Add HTML encoding to folder titles when displayed and enable tag checking in cot_import for pff_title.
Other vulnerabilities in Cotonti
See all- CVE-2026-55742Critical
Cotonti 1.0.0 (master branch, commit f43f1fc3) is vulnerable to Cross-Site Request Forgery in the administration rights handler. In system/admin/admin.rights.php, the rights update action ('a=update') modifies group access rights (including via cot_auth_add_group) without calling cot_check_xg to validate the anti-CSRF token.
- CVE-2026-55745Medium
Cotonti 1.0.0 is vulnerable to Cross-Site Request Forgery in the Personal File Storage (PFS) module. In modules/pfs/inc/pfs.editfolder.php, the folder update action ('a=update') updates folder metadata without calling cot_check_xg to validate the anti-CSRF token.
- CVE-2026-55744High
Cotonti 1.0.0 is vulnerable to Cross-Site Request Forgery in the Personal File Storage (PFS) module. 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' do.
- CVE-2026-55741High
Cotonti 1.0.0 is vulnerable to Cross-Site Request Forgery in the administration configuration handler. The configuration update action ('a=update') processes POST data via cot_config_update_options without calling cot_check_xg to validate the anti-CSRF token (the 'x' parameter), unlike other admin handlers.
Original NVD description (English source)
Cotonti 1.0.0 (master branch, commit f43f1fc3) is vulnerable to stored Cross-Site Scripting in the Personal File Storage (PFS) module. A folder title (pff_title) is imported with the 'TXT' filter, which does not strip or encode HTML (the tag check in cot_import is disabled), so an authenticated user can store HTML/JavaScript in a folder title.