CVE-2026-44209
Banks: Critical Remote Code Execution (RCE) via Jinja2 SSTI
HIGH 7.5EPSS 0.7%
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.
- Affected
- masci · banks
- CVSS v3.1 CNA
- 7.5 HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H - EPSS
- 0.74% chance of exploitation in the next 30 days, 54th percentile
- Published
- 2026-05-26
- Updated
- 2026-07-24