CVE-2026-16052
Awaiting Analysis
Awaiting Analysis - Queue
HTTP Cookie Separator Injection in Python's http.cookies.Morsel
Vulnerability report for CVE-2026-16052, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-11-12
Last updated on: 2026-11-12
Assigner: Python Software Foundation
Description
Description
The http.cookies.Morsel class allows separator semicolons in attribute
values
and includes them verbatim in all output formats. An attacker who can
control
these values could use this to relax the cookie's Domain or SameSite
restrictions.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-74 | The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. |
