Threat Intelligence Database

CVE-2026-34745 is a critical path traversal vulnerability in ShaneIsrael fireshare versions prior to 1.5.3. The issue exists because a fix applied to the authenticated /api/uploadChunked endpoint was not applied to the unauthenticated /api/uploadChunked/public endpoint. This allows an unauthenticated attacker to exploit the checkSum parameter to write arbitrary files with attacker-controlled content to any writable path on the server filesystem. The vulnerability has been patched in version 1.5.3.

CVE-2026-33645 is a path traversal vulnerability in ShaneIsrael fireshare version 1.5.1. It allows an authenticated attacker to write arbitrary files outside the intended upload directory via the chunked upload endpoint by exploiting improper sanitization of the 'checkSum' multipart field. This can lead to integrity violations and potentially enable further attacks depending on the deployment environment. The issue is fixed in version 1.5.2.

Fireshare facilitates self-hosted media and link sharing. Versions 1.2.30 and below allow an authenticated user, or unauthenticated user if the Public Uploads setting is enabled, to craft a malicious filename when uploading a video file. The malicious filename is then concatenated directly into a shell command, which can be used for uploading files to arbitrary directories via path traversal, or executing system commands for Remote Code Execution (RCE). This issue is fixed in version 1.3.0.

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