Description
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.
References (2)
Core 2
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/HKUDS/LightRAG/security/advisories/GHSA-8ffj-4hx4-9pgf
Issue Tracking
https://github.com/github/advisory-database/issues/7373
Scores
CVSS v3
4.2
EPSS
0.0015
EPSS Percentile
4.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
total
Details
CWE
CWE-347
Status
published
Products (3)
hkuds/lightrag
< 1.4.14
HKUDS/LightRAG
< 1.4.14
pypi/lightrag-hku
0 - 1.4.14PyPI
Published
Apr 08, 2026
Tracked Since
Apr 09, 2026