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CVE-2025-14261— Lack of entropy allows registered low-privileged users of Litmus to crack valid JWT tokens and gain admin privileges

Quick assessment

Affected
Litmuschaos litmus
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

LitmusChaos是Litmus Chaos开源的一个以云原生方式实践混沌工程的程序。 LitmusChaos存在安全特征问题漏洞，该漏洞源于JWT签名密钥过短，可能导致身份验证绕过。

CVSS 7.1 · High EPSS 0.30% · P21

Possible ATT&CK Techniques 1 AI

T1552.004 · Private Keys
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I. Basic Information for CVE-2025-14261

Vulnerability Information
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Vulnerability Title
Lack of entropy allows registered low-privileged users of Litmus to crack valid JWT tokens and gain admin privileges
Source: CVE Program / CVE List V5
Vulnerability Description
The Litmus platform uses JWT for authentication and authorization, but the secret being used for signing the JWT is only 6 bytes long at its core, which makes it extremely easy to crack.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
信息熵不充分
Source: CVE Program / CVE List V5
Vulnerability Title
LitmusChaos 安全特征问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
LitmusChaos是Litmus Chaos开源的一个以云原生方式实践混沌工程的程序。 LitmusChaos存在安全特征问题漏洞，该漏洞源于JWT签名密钥过短，可能导致身份验证绕过。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Litmuschaos litmus 0 ~ 3.23.0 -

II. Public POCs for CVE-2025-14261

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 10813 chars
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III. Intelligence Information for CVE-2025-14261

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IV. Related Vulnerabilities

Same product: litmus
Same vendor: Litmuschaos
Same weakness: CWE-331

V. Comments for CVE-2025-14261

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