CVE-2026-25577 HIGH

CVE-2026-25577: Emmett has an Unhandled CookieError Exception Causing Denial of Service

Vendor Emmett-Framework
Product core
Weakness CWE-248
Published February 10, 2026
Last update February 11, 2026
View on NVD All CVEs

CVSS base score

7.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

February 10, 2026 CVE published
February 11, 2026 Record updated