CVE-2026-107716

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.

CVSS 4.0

7.3CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N

EPSS

0.1% chance of exploitation in the next 30 days; higher than 2% of CVEs (scores of 2026-10-25)

CWEs

CWE-22, CWE-59

Published

2026-10-08

Modified

2026-10-09

Record from

the NVD, synced 2026-10-19

Packages (OSV)

References

• https://github.com/masci/banks/commit/23ed13e50b4e217693fa5f9c30943fac8a41582f
• https://github.com/masci/banks/pull/79
• https://github.com/masci/banks/releases/tag/v2.5.1
• https://github.com/masci/banks/security/advisories/GHSA-556j-vv39-8rqv

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