CVE-2026-39413
Medium · 4.2CVSS
4.2
EPSS
0.2%
Published
Apr 8, 2026
CISA due date
—
The record
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 packages
| Ecosystem | Package | Introduced | Fixed |
|---|
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