Description
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.
Published: 2026-05-26
Score: 7.5 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-gphh-9q3h-jgpp banks has Critical Remote Code Execution (RCE) via Jinja2 SSTI
History

Tue, 30 Jun 2026 05:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 27 May 2026 10:30:00 +0000

Type Values Removed Values Added
First Time appeared Masci
Masci banks
Vendors & Products Masci
Masci banks

Tue, 26 May 2026 21:15:00 +0000

Type Values Removed Values Added
Description 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.
Title Banks: Critical Remote Code Execution (RCE) via Jinja2 SSTI
Weaknesses CWE-1336
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-06-30T12:10:32.460Z

Reserved: 2026-05-05T15:13:47.571Z

Link: CVE-2026-44209

cve-icon Vulnrichment

Updated: 2026-06-30T03:20:55.354Z

cve-icon NVD

Status : Deferred

Published: 2026-05-26T21:16:37.620

Modified: 2026-06-17T10:50:21.683

Link: CVE-2026-44209

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-27T10:08:28Z

Weaknesses