What is CVE-2026-55502?
CVE-2026-55502 affects Cloudreve file management system before version 4.17.0. A privilege escalation flaw allows users with only Admin.Read permission to modify storage policies via the OAuth signin endpoint, as the system persists caller-supplied secrets without requiring Admin.Write. Users should upgrade to version 4.17.0 or later immediately.
Azərbaycanca: CVE-2026-55502 Cloudreve fayl idarəetmə sistemində aşkarlanıb. 4.17.0 versiyasından əvvəl, yalnız Admin.Read icazəsi olan istifadəçi POST /api/v4/admin/policy/oauth/signin sorğusu ilə OAuth token əldə edərək OneDrive kimi storage parametrlərini dəyişdirə bilər. İstifadəçilərə dərhal 4.17.0 və ya daha yeni versiyaya yeniləmə tövsiyə olunur.
Related CVEs
link basis: same weakness class CWE-863
FAQ2
Which versions of Cloudreve are affected by CVE-2026-55502?
CVE-2026-55502 affects Cloudreve file management system versions before 4.17.0.
What permission level is required to exploit CVE-2026-55502 to modify storage policies?
A user with only Admin.Read permission can exploit this vulnerability to modify storage policies such as OneDrive by obtaining an OAuth token.
See also6
This explainer is AI-written from source data — skopnix's own reporting on this CVE; CVSS scores, vendors and versions are never invented. See NVD for the official record.