{"id":"CVE-2026-30961","aliases":["GHSA-45vh-rpc8-hxpp","GO-2026-4695"],"url":"https://o3.security/vulnerability/CVE-2026-30961","summary":"Gokapi's File Request MaxSize Limit Bypassed via Multi-Chunk Upload","details":"### Summary\n\nThe 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.\n\n### Impact\n\nAny 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.","published":"2026-03-13T19:09:38.427Z","modified":"2026-08-12T03:51:26.039147638Z","cvss":{"score":4.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/forceu/gokapi","fixedVersion":"2.2.4"}],"fix":null,"references":[{"type":"WEB","url":"https://github.com/Forceu/Gokapi/releases/tag/v2.2.4"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/30xxx/CVE-2026-30961.json"},{"type":"ADVISORY","url":"https://github.com/Forceu/Gokapi/security/advisories/GHSA-45vh-rpc8-hxpp"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-30961"},{"type":"PACKAGE","url":"https://github.com/Forceu/Gokapi"},{"type":"WEB","url":"https://pkg.go.dev/vuln/GO-2026-4695"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:26.039147638Z"}}