SecureDrop Client is a desktop app for journalists to securely communicate with sources and handle submissions on the SecureDrop Workstation. Prior to version 1.3.1, a malicious SecureDrop Server could bypass securedrop-proxy's origin limitation by responding with cross-origin redirects. SecureDrop Server itself has multiple layers of built-in hardening, and is a dedicated physical machine exposed on the internet only via Tor hidden services for the Source and Journalist interfaces, and optionally via remote SSH access over another Tor hidden service. A newsroom's SecureDrop Workstation communicates only with its own dedicated SecureDrop Server. Version 1.3.1 fixes the issue.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
NVD published the first details for CVE-2026-49996
A CVSS base score of 3.7 has been assigned.
Feedly found the first article mentioning CVE-2026-49996 . See article
CVE-2026-49996: securedrop-proxy origin limitation can be bypassed with redirects [LOW] CVSS 3.7
CVE-2026-49996 | Freedom of the Press Foundation SecureDrop Client up to 1.3.0 securedrop-proxy cross-domain policy
CVE-2026-49996 securedrop-proxy origin limitation can be bypassed with redirects
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