Improper access control in S3 File System CORS Upload - CVE-2026-122057
Published: November 5, 2026
Vulnerability identifier: #VU159415
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-122057
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to the affected module does not sufficiently check access to file uploads. A remote attacker can bypass implemented security restrictions and delete files they should not have access to.
Affected software
S3 File System CORS Upload
How to mitigate CVE-2026-122057
Install updates from vendor's website.
S3 File System CORS Upload - update to 1.3.0