Gokapi's File Request MaxSize Limit Bypassed via Multi-Chunk Upload in github.com/forceu/gokapi

Open Source Vulnerabilities CVE-2026-30961

Gokapi is a self-hosted file sharing server with automatic expiration and encryption support. Prior to 2.2.4, the chunked upload completion path for file requests does not validate the total file size against the per-request MaxSize limit. An attacker with a public file request link can split an oversized file into chunks each under MaxSize and upload them sequentially, bypassing the size restriction entirely. Files up to the server's global MaxFileSizeMB are accepted regardless of the file request's configured limit. This vulnerability is fixed in 2.2.4.

Open Source Vulnerabilities GHSA-45vh-rpc8-hxpp

### Summary The chunked upload completion path for file requests does not validate the total file size against the per-request `MaxSize` limit. An attacker with a public file request link can split an oversized file into chunks each under `MaxSize` and upload them sequentially, bypassing the size restriction entirely. Files up to the server's global `MaxFileSizeMB` are accepted regardless of the file request's configured limit. ### Impact Any guest with access to a shared file request link can upload files far larger than the administrator-configured size limit, up to the server's global `MaxFileSizeMB`. This allows unauthorized storage consumption, circumvention of administrative resource policies, and potential service disruption through storage exhaustion. No data exposure or privilege escalation occurs.

Open Source Vulnerabilities GO-2026-4695

Gokapi's File Request MaxSize Limit Bypassed via Multi-Chunk Upload in github.com/forceu/gokapi. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. (If this is causing false-positive reports from vulnerability scanners, please suggest an edit to the report.) The additional affected modules and versions are: github.com/forceu/gokapi before v2.2.4.