---
id: CVE-2026-107716
title: Banks generates meaningful LLM prompts using a simple template language
summary: >-
  Banks generates meaningful LLM prompts using a simple template language. Prior
  to 2.5.1, Banks DirectoryPromptRegistry does not reject symbolic links for
  index.json or discovered and existing .jinja prompt files. In an application
  where …
severity: medium
cwe:
  - CWE-22
  - CWE-59
vendor: banks
product: banks
affected:
  - banks <= 2.5.0
patched:
  - banks 2.5.1
published: '2026-10-08'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T22:17:27.480'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-107716'
references:
  - url: >-
      https://github.com/masci/banks/commit/23ed13e50b4e217693fa5f9c30943fac8a41582f
    label: security-advisories@github.com
  - url: 'https://github.com/masci/banks/pull/79'
    label: security-advisories@github.com
  - url: 'https://github.com/masci/banks/releases/tag/v2.5.1'
    label: security-advisories@github.com
  - url: 'https://github.com/masci/banks/security/advisories/GHSA-556j-vv39-8rqv'
    label: security-advisories@github.com
  - url: 'https://github.com/advisories/GHSA-556j-vv39-8rqv'
  - url: 'https://github.com/masci/banks'
tags:
  - nvd
  - ghsa
  - pip
  - osv
aliases:
  - GHSA-556j-vv39-8rqv
ecosystem: pip
ingestedAt: '2026-10-08T22:11:53.869Z'
---

## Overview

Banks generates meaningful LLM prompts using a simple template language. Prior to 2.5.1, Banks DirectoryPromptRegistry does not reject symbolic links for index.json or discovered and existing .jinja prompt files. In an application where untrusted users can influence a prompt directory, DirectoryPromptRegistry._scan() and DirectoryPromptRegistry.get() can follow a link outside the registry root and disclose a file, while DirectoryPromptRegistry.set(), DirectoryPromptRegistry._save(), and DirectoryPromptRegistry._load() can read or overwrite an external link target. The issue requires attacker influence over the registry directory or its extracted contents. This issue is fixed in version 2.5.1.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-107716)

Affected packages:

- `banks <= 2.5.0`

Patched in:

- `banks 2.5.1`

Source: https://github.com/advisories/GHSA-556j-vv39-8rqv