CVE-2026-44209
Banks: Critical Remote Code Execution (RCE) via Jinja2 SSTI
Vexday Risk Score
21Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 7.5EPSS 0.4%KEV nãoPoC —Nuclei —Metasploit —Patch —
Lifecycle
26 May 2026Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
Banks generates meaningful LLM prompts using a template language that makes sense. Prior to 2.4.2, banks uses jinja2.Environment() (unsandboxed) to render prompt templates. Applications that pass user-supplied strings as the template argument to Prompt() are vulnerable to Server-Side Template Injection (SSTI), which can lead to Remote Code Execution (RCE) on the host system. This vulnerability is fixed in 2.4.2.
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected products
masci · banksWant to know if your infrastructure is exposed to this?
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