CVE-2026-34236— Auth0 PHP SDK Insufficient Entropy in Cookie Encryption
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I. Basic Information for CVE-2026-34236
Vulnerability Information
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Vulnerability Title
Auth0 PHP SDK Insufficient Entropy in Cookie Encryption
Source: NVD (National Vulnerability Database)
Vulnerability Description
Auth0-PHP is a PHP SDK for Auth0 Authentication and Management APIs. From version 8.0.0 to before version 8.19.0, in applications built with the Auth0 PHP SDK, cookies are encrypted with insufficient entropy, which may result in threat actors brute-forcing the encryption key and forging session cookies. This issue has been patched in version 8.19.0.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
信息熵不充分
Source: NVD (National Vulnerability Database)
Vulnerability Title
Auth0-PHP 安全特征问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Auth0-PHP是Auth0开源的一个用于Auth0身份验证和管理API的PHP SDK。 Auth0-PHP 8.0.0至8.19.0之前版本存在安全特征问题漏洞，该漏洞源于使用熵不足的加密方式处理Cookie，可能导致威胁参与者暴力破解加密密钥并伪造会话Cookie。
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
II. Public POCs for CVE-2026-34236
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
Qwen3.6-35B-A3B · 9454 chars
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III. Intelligence Information for CVE-2026-34236
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- Release 8.19.0 · auth0/auth0-PHP · GitHubx_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2026-34236
IV. Related Vulnerabilities
Same vendor: auth0
- CVE-2026-40155
Auth0 Next.js SDK has Improper Proxy Cache Lookup - CVE-2025-68129
Auth0-PHP SDK has Improper Audience Validation - CVE-2025-67716
Auth0 Next.js SDK has Improper Validation of Query Parameter - CVE-2025-67490
Auth0 Next.js SDK has Improper Request Caching Lookup - CVE-2025-65945
auth0/node-jws improper HMAC signature verification vulnerab
Same weakness: CWE-331
- CVE-2026-2336
Weak webstax_auth Cookie Authentication Allows Privilege Esc - CVE-2026-41080
libexpat 安全漏洞 - CVE-2026-2878
Insufficient Entropy Vulnerability in Telerik UI for ASP.NET - CVE-2025-0577
Glibc: vdso getrandom acceleration may return predictable ra - CVE-2026-2541
Micca KE700 Brute-force vulnerability due to low entropy
V. Comments for CVE-2026-34236
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