Mintplex-Labs anything-llm up to 1.12.x fs.stat link following

Summaryinfo

A vulnerability identified as critical has been detected in Mintplex-Labs anything-llm up to 1.12.x. This vulnerability affects the function fs.stat. This manipulation causes link following. This vulnerability is tracked as CVE-2026-45403. The attack is possible to be carried out remotely. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Mintplex-Labs anything-llm up to 1.12.x. It has been declared as problematic. Affected by this vulnerability is the function fs.stat. The manipulation with an unknown input leads to a link following vulnerability. The CWE definition for the vulnerability is CWE-59. The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

AnythingLLM is an application that turns pieces of content into context that any LLM can use as references during chatting. Prior to 1.13.0, the AnythingLLM agent filesystem copy tool validates only the top-level source and destination paths. The recursive copy helper then descends into child entries using fs.stat() and copies files with fs.copyFile() without validating each child or rejecting symlinks. Because both APIs follow symlinks, a symlink nested inside an allowed source directory can point outside the allowed filesystem root and cause outside file contents to be copied into an allowed destination as a regular file. This vulnerability is fixed in 1.13.0.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-45403 since 05/12/2026. The exploitation appears to be difficult. The attack can be launched remotely. Additional levels of successful authentication are required for exploitation. Technical details are known, but no exploit is available.

Upgrading to version 1.13.0 eliminates this vulnerability. Applying the patch 21ce03087145a4261c1de03b056fba639f699c09 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Type

• Artificial Intelligence Software

Vendor

• Mintplex-Labs

Name

• anything-llm

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10
• 1.11
• 1.12

License

• open-source

Website

• Product: https://github.com/Mintplex-Labs/anything-llm/

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