CVE-2025-15366
Unknown Unknown - Not Provided
Command Injection via Newline in Python imaplib Module

Publication date: 2026-01-20

Last updated on: 2026-01-20

Assigner: Python Software Foundation

Description
The imaplib module, when passed a user-controlled command, can have additional commands injected using newlines. Mitigation rejects commands containing control characters.
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Meta Information
Published
2026-01-20
Last Modified
2026-01-20
Generated
2026-06-16
AI Q&A
2026-01-21
EPSS Evaluated
2026-06-14
NVD
CVE-2025-15366
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
python imaplib *
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-77 The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.
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Executive Summary

The vulnerability in the imaplib module allows an attacker to inject additional commands by including newlines in a user-controlled command. This means that if an attacker can control the input to imaplib, they can potentially execute unintended commands. The mitigation involves rejecting commands that contain control characters to prevent this injection.

Impact Analysis

This vulnerability can allow an attacker with some level of access to inject additional commands into the imaplib module, potentially leading to unauthorized actions or manipulation of the IMAP session. This could compromise the integrity or behavior of the application using imaplib.

Mitigation Strategies

Mitigation involves rejecting commands containing control characters to prevent command injection via newlines in the imaplib module.

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