CVE-2026-50000
MediumCVSS 5.0Exploitation Probability (EPSS)
Low risk30th percentile - higher than 30% of all known CVEs
Summary
In SecureDrop from version 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. An attacker who already has access to the Journalist Interface onion address, the required authentication, and a recent nonexpired API session token can reuse that token against the web UI until its natural expiry (at most eight hours).
Risk Assessment
A compromised journalist can access encrypted submissions and perform broad actions on source submissions. This may breach confidentiality and integrity of whistleblower data.
Recommendation
Update SecureDrop to version 2.16.0 or later to fix the session prefix issue and separate API from web sessions.
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Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS