Description
SecureDrop is an open-source whistleblower submission system that media organizations can use to securely accept documents from, and communicate with anonymous sources. From 2.5.0 until 2.16.0, the `Journalist Interface` can accept an `API session` token against the `web UI` because its `SessionInterface` keeps a mutable session key prefix that changes with each request and persists across requests. API and web sessions were separated in `Redis` starting in version 2.5.0, but prefix corruption confuses those session namespaces. An attacker who already has access to the secret `Journalist Interface` onion address, the required authentication access and a recent nonexpired `API session` token can reuse that token against the `web UI` until its natural expiry, at most eight hours. The corrupted prefix can also prevent logout from deleting the correct `Redis` session, although normal expiry still applies. A compromised journalist can access encrypted submissions and perform broad actions on source submissions, but this issue does not expose plaintext submissions or affect the running system's availability. This issue is fixed in version 2.16.0.
Published: 2026-10-30
Score: 5 Medium
EPSS: n/a
KEV: No
AI Analysis

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Remediation

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Tracking

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Advisories

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History

Fri, 30 Oct 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 30 Oct 2026 17:15:00 +0000

Type Values Removed Values Added
Description SecureDrop is an open-source whistleblower submission system that media organizations can use to securely accept documents from, and communicate with anonymous sources. From 2.5.0 until 2.16.0, the `Journalist Interface` can accept an `API session` token against the `web UI` because its `SessionInterface` keeps a mutable session key prefix that changes with each request and persists across requests. API and web sessions were separated in `Redis` starting in version 2.5.0, but prefix corruption confuses those session namespaces. An attacker who already has access to the secret `Journalist Interface` onion address, the required authentication access and a recent nonexpired `API session` token can reuse that token against the `web UI` until its natural expiry, at most eight hours. The corrupted prefix can also prevent logout from deleting the correct `Redis` session, although normal expiry still applies. A compromised journalist can access encrypted submissions and perform broad actions on source submissions, but this issue does not expose plaintext submissions or affect the running system's availability. This issue is fixed in version 2.16.0.
Title SecureDrop: API session token reuse against the Journalist Interface web UI
Weaknesses CWE-863
References
Metrics cvssV3_1

{'score': 5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:H/A:N'}


Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-10-30T18:35:34.990Z

Reserved: 2026-06-02T18:30:51.283Z

Link: CVE-2026-50000

cve-icon Vulnrichment

Updated: 2026-10-30T18:25:19.163Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-30T17:17:25.373

Modified: 2026-10-30T19:37:07.073

Link: CVE-2026-50000

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-30T18:45:14Z

Weaknesses