cvedb.io
CVE-2026-39413
MEDIUM · CVSS 4.2
EPSS exploitation probability: 0%
Published 2026-04-08T20:16:25.877 · Last modified 2026-06-17T10:42:04.610

Summary

LightRAG provides simple and fast retrieval-augmented generation. Prior to 1.4.14, the LightRAG API is vulnerable to a JWT algorithm confusion attack where an attacker can forge tokens by specifying 'alg': 'none' in the JWT header. Since the jwt.decode() call does not explicitly deny the 'none' algorithm, a crafted token without a signature will be accepted as valid, leading to unauthorized access. This vulnerability is fixed in 1.4.14.

Affected products

hkuds — lightrag

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.