CVE-2026-25577— Emmett has an Unhandled CookieError Exception Causing Denial of Service
Quick assessment
Affected
emmett-framework core
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Emmett-Core是Emmett开源的一个Emmett框架核心库。 Emmett-Core 1.3.11之前版本存在安全漏洞，该漏洞源于解析畸形Cookie标头时未处理CookieError异常，可能导致拒绝服务。
Possible ATT&CK Techniques 1 AI
T1498 · Network Denial of Service
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I. Basic Information for CVE-2026-25577
Vulnerability Information
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Vulnerability Title
Emmett has an Unhandled CookieError Exception Causing Denial of Service
Source: CVE Program / CVE List V5
Vulnerability Description
Emmett is a framework designed to simplify your development process. Prior to 1.3.11, the cookies property in mmett_core.http.wrappers.Request does not handle CookieError exceptions when parsing malformed Cookie headers. This allows unauthenticated attackers to trigger HTTP 500 errors and cause denial of service. This vulnerability is fixed in 1.3.11.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未捕获的异常
Source: CVE Program / CVE List V5
Vulnerability Title
Emmett-Core 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Emmett-Core是Emmett开源的一个Emmett框架核心库。 Emmett-Core 1.3.11之前版本存在安全漏洞，该漏洞源于解析畸形Cookie标头时未处理CookieError异常，可能导致拒绝服务。
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 |
|---|---|---|---|---|
| emmett-framework | core | < 1.3.11 | - |
|
II. Public POCs for CVE-2026-25577
| # | POC Description | Source Link | Shenlong Link |
|---|
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V. Comments for CVE-2026-25577
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