CVE-2026-33587: Lack of user input sanitisation in Open Notebook v1.8.3 allows the application user to execute Python code (and…
CVE-2026-33587 · Severity: critical · CVSS 10 · Published 2026-05-07
Lack of user input sanitisation in Open Notebook v1.8.3 allows the application user to execute Python code (and subsequently OS commands) on the docker container via Server-Side Template Injection (SSTI) for user-created transformations.
No. Junglewise Threat Intelligence has no report of CVE-2026-33587 being exploited in the wild.
How severe is CVE-2026-33587?
Critical severity, with a CVSS score of 10, published 7 May 2026.
Which products and versions are affected?
Lfnovo Open Notebook. The advisory does not name versions.
Is there a fix for CVE-2026-33587?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2026-33587?
Check whether you run Lfnovo Open Notebook. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.