CVE-2026-71863: SecureDrop: Onion Service client auth credentials copied to Monitor Server
SecureDrop is an open-source whistleblower submission system that media organizations can use to securely accept documents from, and communicate with anonymous sources. From 2.13.0 until 2.16.1, running the securedrop-admin install Ansible playbook with journalist alerts disabled leaves the journalist alert key filename empty, causing the copy task to transfer every file in ~/.config/securedrop-admin/, including Onion Service client authentication credentials, to the Monitor Server. An attacker must first compromise the privileged Monitor Server to obtain the credentials, and the credentials remain an additional protection layer rather than sufficient access by themselves because the Journalist Interface still requires a username, passphrase, and MFA, while SSH access still requires SSH keys. This issue is fixed in version 2.16.1.
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
SecureDropto a version that resolves this vulnerability.Fixed in 2.16.1
Event History
Frequently Asked Questions
Which deployments are affected?
Deployments running SecureDrop versions 2.13.0 through 2.16.1 are affected if the securedrop-admin install Ansible playbook was run with journalist alerts disabled.
What would an attacker need to exploit the exposed credentials?
An attacker must first compromise the privileged Monitor Server to retrieve the copied Onion Service client authentication credentials. Those credentials alone do not grant access to the Journalist Interface or SSH: the Journalist Interface also requires a username, passphrase, and MFA, and SSH requires SSH keys.
What should teams do to remediate the issue?
Upgrade SecureDrop to version 2.16.1, which fixes the copy behavior. Because credentials may already have been transferred to the Monitor Server in affected installations, teams should treat that server as holding those credentials until they have assessed and addressed the exposure.