CVE-2026-25577
HIGHemmett-core < 1.3.11 - Unauthenticated Denial of Service via Malformed Cookie Header
Title source: llmDescription
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.
References (2)
Core 2
Core References
Vendor Advisory x_refsource_confirm
https://github.com/emmett-framework/core/security/advisories/GHSA-x6cr-mq53-cc76
Scores
CVSS v3
7.5
EPSS
0.0027
EPSS Percentile
18.7%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-248
CWE-307
Status
published
Products (2)
emmett-framework/core
< 1.3.11
pypi/emmett-core
0 - 1.3.11PyPI
Published
Feb 10, 2026
Tracked Since
Feb 18, 2026