CVE-2026-116748
8.8 HIGHpublic exploit availablePublished 2026-10-26 · Updated 2026-10-26
AI analysis for this CVE has not been generated yet. Raw NVD data is shown below.
NVD description
Transmission 4.0.0 before 4.1.3 contains a permissive CORS vulnerability in handle_request() in rpc-server.cc that exposes the X-Transmission-Session-Id anti-CSRF token to any web origin. Malicious web pages can read the token from the 409 handshake response and replay it to issue RPC calls, enabling script-torrent-done execution, download-dir changes, or torrent and data deletion.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weaknesses
CWE-942
Public exploit & PoC references
- https://github.com/transmission/transmission
- https://github.com/transmission/transmission/blob/4.1.2/libtransmission/rpc-server.cc#L560
- https://github.com/transmission/transmission/commit/c6a1bd2017a0fea9c956737c213f23e4b0f7929e
- https://github.com/transmission/transmission/pull/8938
- https://github.com/transmission/transmission/releases/tag/4.1.3
All references
- https://github.com/transmission/transmission
- https://github.com/transmission/transmission/blob/4.1.2/libtransmission/rpc-server.cc#L560
- https://github.com/transmission/transmission/commit/c6a1bd2017a0fea9c956737c213f23e4b0f7929e
- https://github.com/transmission/transmission/pull/8938
- https://github.com/transmission/transmission/releases/tag/4.1.3
- https://joshua.hu/transmission-cors-rpc-csrf-rce-drive-by-exploit
- https://www.vulncheck.com/advisories/transmission-4.0.0-before-4.1.3-permissive-cors-leaks-rpc-anti-csrf-token
Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.
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