CVE-2026-49996

LOW 3.7

securedrop-proxy origin limitation can be bypassed with redirects

CVSS Score

3.7

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-601
Vendor	freedomofpress
Product	securedrop-client
Published	Aug 20, 2026
Last Updated	Aug 20, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Affected Versions

freedomofpress / securedrop-client

< 1.3.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/freedomofpress/securedrop-client/security/advisories/GHSA-6qxc-pcfg-v6qv github.com: https://github.com/freedomofpress/securedrop-client/commit/3c9769b12fb115768d43617635fd2e00737ef2f7