CVE-2026-39413

MEDIUM

4.2

Descricao

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.

Detalhes CVE

Pontuacao CVSS v3.14.2

SeveridadeMEDIUM

Vetor CVSSCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:N/A:N

Vetor de ataqueNETWORK

ComplexidadeHIGH

Privilegios necessariosHIGH

Interacao do usuarioREQUIRED

Publicado4/8/2026

Ultima modificacao4/8/2026

Fontenvd

Avistamentos honeypot0

Fraquezas (CWE)

CWE-347

Referencias

https://github.com/HKUDS/LightRAG/security/advisories/GHSA-8ffj-4hx4-9pgf(security-advisories@github.com)

Correlacoes IOC

Sem correlacoes registradas

This product uses data from the NVD API but is not endorsed or certified by the NVD.