LibreTranslate LibreTranslate vulnerabilities

LibreTranslate through 1.9.6 omits the access_check decorator from the download_file route, allowing unauthenticated access to translated files. Attackers can bypass API key requirements and abuse ban lists to download files without authentication on protected instances.

LibreTranslate through 1.9.7, fixed in commit 397fd22, contains an IP spoofing vulnerability in the get_remote_address() function that allows unauthenticated attackers to spoof client IP addresses by injecting arbitrary values into the X-Forwarded-For header without trusted proxy validation. Attackers can bypass per-IP rate limiting and flood bans by supplying forged addresses in the X-Forwarded-For header to enable unlimited API abuse.