Denial of Service Vulnerability in Emmett Framework Affecting Cookie Handling
CVE-2026-25577

7.5HIGH

Key Information:

Vendor

Emmett-framework

Status
Core
Vendor
CVE Published:
10 February 2026

What is CVE-2026-25577?

The Emmett Framework has a vulnerability in its cookie handling mechanism where the cookies property in mmett_core.http.wrappers.Request does not properly manage CookieError exceptions for malformed Cookie headers in versions prior to 1.3.11. This oversight allows unauthenticated attackers to exploit the issue, potentially triggering HTTP 500 errors, which leads to denial of service. The vulnerability has been addressed in version 1.3.11. For more details, refer to the official security advisory.

Affected Version(s)

core < 1.3.11

References

https://github.com/emmett-framework/core/security/advisor...
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https://github.com/emmett-framework/core/commit/9557ea23a...
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CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.