Vulnerability details

CVE-2026-25577

emmett-framework core

Emmett has an Unhandled CookieError Exception Causing Denial of Service

CVSS 3.1

7.5High

Official 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.

CVSS scores

Score	Version	Source	Vector
7.5High	3.1	CVEProject cvelistV5 (CNA) (GitHub_M)	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`

Affected products

Vendor	Product	Versions	Source
emmett-framework	core	< 1.3.11	CVEProject cvelistV5 (CNA)

References and advisories

https://github.com/emmett-framework/core/commit/9557ea23a27cbadf7774d8bca6bbe4b54fa8a3ec x_refsource_MISC
https://github.com/emmett-framework/core/security/advisories/GHSA-x6cr-mq53-cc76 x_refsource_CONFIRM

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Details

Published: 2026-02-10
Last updated: 2026-02-11
State: Published
Assigner (CNA): GitHub_M

Exploit prediction (EPSS)

0.31%

Probability of exploitation in 30 days

24.9%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: Yes
Exploitation: Proof of concept
Technical impact: Partial

Weaknesses (CWE)

CWE-248
Uncaught Exception
CWE-307
Improper Restriction of Excessive Authentication Attempts