PT-2026-39237 · Masci+1 · Banks

Anandakrishnasv · Published 2026-05-08 · Updated 2026-05-26 · CVE-2026-44209

Mitre

CVSS v3.1

7.5

High

Base vector

AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

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.

Fix

Weakness Enumeration

CWE-1336

Related Identifiers

CVE-2026-44209

GHSA-GPHH-9Q3H-JGPP

Affected Products

Banks

References · 5

• https://osv.dev/vulnerability/GHSA-gphh-9q3h-jgpp · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-44209 · Security Note
• https://github.com/masci/banks/security/advisories/GHSA-gphh-9q3h-jgpp · Note
• https://github.com/masci/banks · Note
• https://github.com/masci/banks/pull/74 · Note