Gokapi's File Request MaxSize Limit Bypassed via Multi-Chunk Upload
### 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.
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-30961US | — | — | ||
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… | ||||
references
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