GHSA-mcww-4hxq-hfr3

Source

https://github.com/advisories/GHSA-mcww-4hxq-hfr3

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-mcww-4hxq-hfr3/GHSA-mcww-4hxq-hfr3.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-mcww-4hxq-hfr3

Aliases

CVE-2026-30762

Published

2026-04-04T06:14:41Z

Modified

2026-04-06T23:34:49.476157Z

Severity

7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator

Summary

LightRAG: Hardcoded JWT Signing Secret Allows Authentication Bypass

Details

Subject: Security Vulnerability Report Hardcoded JWT Secret (CVE-2026-30762)

Hi HKUDS team,

I'm writing to report a security vulnerability I discovered in LightRAG v1.4.10. This has been assigned CVE-2026-30762 by MITRE.

Vulnerability: Hardcoded JWT signing secret Type: Improper Authentication (CWE-287) Severity: High Attack Vector: Remote / Unauthenticated

Summary: The file lightrag/api/config.py (line 397) uses a default JWT secret "lightrag-jwt-default-secret" when the TOKEN_SECRET environment variable is not set. The AuthHandler in lightrag/api/auth.py (lines 24-25) uses this secret to sign and verify tokens. An unauthenticated attacker can forge valid JWT tokens using the publicly known default secret and gain access to any protected endpoint.

Reproduction: 1. Install LightRAG v1.4.10 with AUTHACCOUNTS configured but no TOKENSECRET set 2. Use PyJWT to sign a token: jwt.encode({"sub": "admin", "role": "user"}, "lightrag-jwt-default-secret", algorithm="HS256") 3. Send a request to any protected endpoint with the header: Authorization: Bearer <forged_token> 4. Access is granted without valid credentials

Suggested Fix: Require TOKENSECRET to be explicitly set when AUTHACCOUNTS is configured. Refuse to start the API server if authentication is enabled but no custom secret is provided.

I'm following a 90-day responsible disclosure timeline from today's date. Please let me know if you have any questions or need additional information.

Best regards, Venkata Avinash Taduturi

Database specific

{
    "nvd_published_at": null,
    "severity": "HIGH",
    "cwe_ids": [
        "CWE-287"
    ],
    "github_reviewed_at": "2026-04-04T06:14:41Z",
    "github_reviewed": true
}

References

Affected packages

PyPI / lightrag-hku

Package

Name: lightrag-hku; View open source insights on deps.dev
Purl: pkg:pypi/lightrag-hku

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.4.13

Affected versions

0.*

0.0.2

0.0.3

0.0.4

0.0.5

0.0.6

0.0.7

0.0.8

0.0.9

1.*

1.0.0

1.0.1

1.0.3

1.0.5

1.0.6

1.0.8

1.0.9

1.1.0

1.1.1

1.1.2

1.1.3

1.1.4

1.1.5

1.1.6

1.1.7

1.2.1

1.2.2

1.2.3

1.2.5

1.2.6

1.3.0

1.3.1

1.3.2

1.3.3

1.3.4

1.3.5

1.3.6

1.3.7

1.3.8

1.3.9

1.4.0

1.4.1

1.4.2

1.4.3

1.4.4

1.4.5

1.4.6

1.4.7

1.4.8rc4

1.4.8rc6

1.4.8rc7

1.4.8rc8

1.4.8rc9

1.4.8.1

1.4.8.2

1.4.9rc1

1.4.9rc2

1.4.9rc3

1.4.9rc4

1.4.9

1.4.9.1

1.4.9.2

1.4.9.3

1.4.9.4rc1

1.4.9.4

1.4.9.5

1.4.9.6

1.4.9.7

1.4.9.8

1.4.9.9

1.4.9.10

1.4.9.11

1.4.10

1.4.11rc2

1.4.11

1.4.12rc1

1.4.12

1.4.13rc1

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-mcww-4hxq-hfr3/GHSA-mcww-4hxq-hfr3.json"

last_known_affected_version_range

"<= 1.4.12"