CVE-2026-71492
Published:August 20, 2026
Updated:September 24, 2026
Banks generates meaningful LLM prompts using a simple template language. Prior to version 2.4.5, DirectoryPromptRegistry.set() in src/banks/registries/directory.py interpolates attacker-controlled Prompt.name and Prompt.version values into a Path without canonicalization or containment validation. Relative traversal such as ../victim/foo and an absolute Prompt.name can escape or discard the configured registry root, while overwrite=True permits replacement of existing target files. The poisoned name is persisted in index.json and reconstructed by _load(), allowing the out-of-root path to survive later registry loads. An application that forwards request data into these fields can therefore write Prompt.raw bytes to attacker-chosen paths writable by the application process. This issue is fixed in version 2.4.5.
Affected Packages
banks (CONDA):
Affected version(s) >=2.1.0 <2.4.5Fix Suggestion:
Update to version 2.4.5banks (CONDA):
Affected version(s) >=2.1.0 <2.4.5Fix Suggestion:
Update to version 2.4.5https://github.com/masci/banks.git (GITHUB):
Affected version(s) >=v0.1.0 <v2.4.5Fix Suggestion:
Update to version v2.4.5banks (PYTHON):
Affected version(s) >=0.0.1 <2.4.5Fix Suggestion:
Update to version 2.4.5Related Resources (7)
Do you need more information?
Contact UsCVSS v4
Base Score:
6
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
Weakness Type (CWE)
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
EPSS
Base Score:
0.40