CVE-2026-45403

Description

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.

CVSS v3.1 Score

2.0

LOW

CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:N/A:N

EPSS — Exploit Prediction

0.0016

Probability of exploitation

0.06%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-59 CWE-59

Affected Products

Vendor	Product	Versions
mintplexlabs	anythingllm	< 1.13.0

References

Advisories & Patches

https://github.com/Mintplex-Labs/anything-llm/commit/21ce03087145a4261c1de03b056fba639f699c09 https://github.com/Mintplex-Labs/anything-llm/security/advisories/GHSA-vjrp-43mm-j7vw https://github.com/Mintplex-Labs/anything-llm/security/advisories/GHSA-vjrp-43mm-j7vw

Exploits

https://github.com/Mintplex-Labs/anything-llm/security/advisories/GHSA-vjrp-43mm-j7vw https://github.com/Mintplex-Labs/anything-llm/security/advisories/GHSA-vjrp-43mm-j7vw

Frequently Asked Questions

What is CVE-2026-45403? +

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. It has a CVSS v3.1 base score of 2.0 (LOW).

How severe is CVE-2026-45403? +

CVE-2026-45403 has a CVSS v3.1 score of 2.0 out of 10, rated LOW. This is a low-severity vulnerability with limited impact. The EPSS score is 0.0016, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-45403? +

CVE-2026-45403 affects products from mintplexlabs, specifically: anythingllm. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-45403? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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