PT-2026-125497

CVE-2026-116748

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Published

2026-10-26

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Updated

2026-10-26

Description by

CVSS 3.1
8.8
High
MetricsAV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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.
Exploitability
Fix
Researchers
Vendors
Affected products
Weakness enumeration
CWE-942: Permissive Cross-domain Policy with Untrusted Domains
Related identifiers
CVE-2026-116748
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