CVE-2026-107716
Banks: Symlink traversal and arbitrary file disclosure/overwrite in DirectoryPromptRegistry
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | banks | <= 2.5.0 | 2.5.1 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-556j-vv39-8rqv
- https://github.com/masci/banks/security/advisories/GHSA-556j-vv39-8rqv
- https://github.com/masci/banks/pull/79
- https://github.com/masci/banks/commit/23ed13e50b4e217693fa5f9c30943fac8a41582f
- https://github.com/masci/banks/releases/tag/v2.5.1