Is this vulnerability remotely exploitable?

Yes. Any remote client capable of sending HTTP requests to an Emmett-powered endpoint can exploit the issue by submitting malformed `Cookie` headers that trigger the unhandled exception.

Does an attacker need authentication or a valid session to exploit this?

No. The vulnerability occurs during request parsing, before authentication or session validation, so unauthenticated attackers can trigger it with crafted requests.

What is the safest general fix pattern for affected code?

The safest pattern is to wrap cookie parsing in explicit exception handling that catches `CookieError` and related parsing exceptions, and to return an empty or sanitized cookie set on failure. This ensures that malformed cookies do not cause 500 errors and that request processing can continue safely.

Severity:

HIGH RISK

(7.5)

Uncaught Cookie Parsing Exception (CWE-248) Causing DoS in Emmett Request Wrapper

CVE-2026-25577

Published:

Feb 10, 2026

Status:

Awaiting Analysis

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-306

CRITICAL RISK

CRITICAL

(9.8)

Missing Authentication for Forgot-Password Email Change API (CWE-306)

Account Takeover / Loss of Account Control

February 17, 2026

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in node-sonos-http-api TTS Provider for macOS

Remote Code Execution on the Server Host

February 17, 2026

Vulnerability Type

Category:

Denial of Service via Unhandled Exception

CWE:

CWE-248;CWE-307

Impact:

Denial of Service (Application Crash/500 Errors)

Severity:

HIGH RISK

(7.5)

CVSS Version:

3.1

Vulnerability Type

Category:

Denial of Service via Unhandled Exception

CWE:

CWE-248;CWE-307

Impact:

Denial of Service (Application Crash/500 Errors)

Severity:

HIGH RISK

(7.5)

CVSS Version:

3.1

Catch This CVE While Code Is Being Written

Detect vulnerable code directly in pull requests, so CVEs are fixed before merge.

Get Started

Ship clean & secure code faster

START 14 DAYS FREE TRIAL

BOOK A DEMO

Made with Love in San Francisco

355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Made with Love in San Francisco

355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Made with Love in San Francisco

355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Uncaught Cookie Parsing Exception (CWE-248) Causing DoS in Emmett Request Wrapper

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

CRITICAL RISK

CRITICAL

(9.8)

Missing Authentication for Forgot-Password Email Change API (CWE-306)

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in node-sonos-http-api TTS Provider for macOS

Vulnerability Type

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

Product

Pricing

Company

Legal

Developers

Compare

Product

Pricing

Company

Legal

Developers

Compare

Product

Pricing

Company

Legal

Developers

Compare