CVE-2026-33587

Remote Code Execution (RCE) via Server-Side Template Injection (SSTI)

CVSS 9.2 CRITICALEPSS 0.2%CWE-20

Vexday Risk Score

28Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 9.2EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado

Lifecycle

07 May 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:N/SA:N

Affected products

Open Notebook · Open Notebook

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References

https://github.com/lfnovo/open-notebook/security/advisories/GHSA-f35w-wx37-26q7