Transmission before 1.92 allows an attacker to cause a denial of service (crash) or possibly have other unspecified impact via a large number of tr arguments in a magnet link.
Transmission through 2.92 relies on X-Transmission-Session-Id (which is not a forbidden header for Fetch) for access control, which allows remote attackers to execute arbitrary RPC commands, and consequently write to arbitrary files, via POST requests to /transmission/rpc in conjunction with a DNS rebinding attack.
Cross-site request forgery (CSRF) vulnerability in Transmission 1.5 before 1.53 and 1.6 before 1.61 allows remote attackers to hijack the authentication of unspecified victims via unknown vectors.
Multiple stack-based buffer overflows in the trmagnetParse function in libtransmission/magnet.c in Transmission 1.91 allow remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via a crafted magnet URL with a large number of (1) tr or (2) ws links.
Transmission before 1.92 allows attackers to prevent download of a file by corrupted data during the endgame.