CVE-2026-24127
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2026-01-23

Last updated on: 2026-02-02

Assigner: GitHub, Inc.

Description
Typemill is a flat-file, Markdown-based CMS designed for informational documentation websites. A reflected Cross-Site Scripting (XSS) exists in the login error view template `login.twig` of versions 2.19.1 and below. The `username` value can be echoed back without proper contextual encoding when authentication fails. An attacker can execute script in the login page context. This issue has been fixed in version 2.19.2.
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Meta Information
Published
2026-01-23
Last Modified
2026-02-02
Generated
2026-06-16
AI Q&A
2026-01-24
EPSS Evaluated
2026-06-15
NVD
CVE-2026-24127
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
typemill typemill to 2.19.2 (exc)
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
CWE-116 The product prepares a structured message for communication with another component, but encoding or escaping of the data is either missing or done incorrectly. As a result, the intended structure of the message is not preserved.
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Executive Summary

This vulnerability is a reflected Cross-Site Scripting (XSS) issue in Typemill CMS versions 2.19.1 and below. Specifically, the login error view template `login.twig` improperly handles the `username` value by echoing it back without proper contextual encoding when authentication fails. This allows an attacker to inject and execute malicious scripts in the context of the login page.

Impact Analysis

An attacker exploiting this vulnerability can execute arbitrary scripts in the login page context, potentially leading to theft of user credentials, session hijacking, or other malicious actions performed on behalf of the user. This can compromise the security of the affected website and its users.

Mitigation Strategies

Upgrade Typemill to version 2.19.2 or later, as this version contains the fix for the reflected Cross-Site Scripting vulnerability in the login error view template.

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