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Critical 9.2Published May 7, 2026
CVE-2026-33587Remote Code Execution (RCE) via Server-Side Template Injection (SSTI)
Updated under an hour ago ()
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It affects Open Notebook and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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
- 9.2 CRITICAL (v4.0, CNA)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
- Weakness (CWE)
- CWE-20
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- ENISA
- NVD analysis
- Analyzed
- Record last updated
- May 7, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Open Notebook Open Notebook open_notebook:open_notebook (from the name) | through 1.8.3 | CNA record |
lfnovo open-notebook lfnovo:open-notebook | before 1.8.4 | NVD |
References
- https://github.com/lfnovo/open-notebook/security/advisories/GHSA-f35w-wx37-26q7vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.