CVE-2025-48494
Plain English Summary
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An attacker can exploit a flaw in Gokapi to upload a file with malicious JavaScript in its name, which runs every time the upload list is viewed, potentially allowing them to execute harmful actions on the server. This vulnerability primarily affects systems before version 2.0.0, where all authenticated users could access and modify all files, making it easier for an attacker if multiple users are present.
Technical Description
Gokapi is a self-hosted file sharing server with automatic expiration and encryption support. When using end-to-end encryption, a stored cross-site scripting vulnerability can be exploited by uploading a file with JavaScript code embedded in the filename. After upload and every time someone opens the upload list, the script is then parsed. Prior to version 2.0.0, there was no user permission system implemented, therefore all authenticated users were already able to see and modify all resources, even if end-to-end encrypted, as the encryption key had to be the same for all users using a version prior to 2.0.0. If a user is the only authenticated user using Gokapi, they are not affected. This issue has been fixed in v2.0.0. A possible workaround would be to disable end-to-end encryption.
CVSS Vector Analysis
Vector String
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XExploit Resources
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Official References
Quick Information
Published
Jun 2, 2025
10 months ago
Last Modified
Mar 9, 2026
29 days ago
Vendor
forceu
Product
gokapi