CVE-2026-53468
Typemill has Stored HTML Attribute Injection in Metadata Fields
Description
Typemill is a flat-file, Markdown-based content management system designed for informational documentation websites. Versions prior to 2.23.0 are vulnerable to stored HTML attribute injection in the page metadata fields (`og:title` and `og:description`). An authenticated user with permission to modify page metadata can inject arbitrary HTML attributes into generated `<meta>` tags due to missing output encoding. Under certain browser or DOM interaction scenarios, this may lead to stored cross-site scripting (XSS). Version 2.23.0 fixes the issue.
INFO
Published Date :
Aug. 21, 2026, 10:16 p.m.
Last Modified :
Oct. 14, 2026, 7:10 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | MITRE-CVE |
Solution
- Update Typemill to version 2.23.0 or newer.
- Sanitize all user-supplied metadata before output.
- Encode HTML attributes in meta tags.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-53468.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-53468 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-53468
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-53468 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-53468 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Translated by [email protected]
Oct. 14, 2026
Action Type Old Value New Value Added Translation Title: typemill, Description: Typemill es un sistema de gestión de contenido de archivo plano, basado en Markdown, diseñado para sitios web de documentación informativa. Las versiones anteriores a la 2.23.0 son vulnerables a la inyección de atributos HTML almacenados en los campos de metadatos de la página ('og:title' y 'og:description'). Un usuario autenticado con permiso para modificar los metadatos de la página puede inyectar atributos HTML arbitrarios en las etiquetas '<meta>' generadas debido a la falta de codificación de salida. Bajo ciertos escenarios de interacción del navegador o del DOM, esto puede conducir a cross-site scripting (XSS) almacenado. La versión 2.23.0 corrige el problema. -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 24, 2026
Action Type Old Value New Value Added Reference https://github.com/typemill/typemill/security/advisories/GHSA-wg6r-jwmr-p7gr Added SSVC {'id': 'CVE-2026-53468', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-08-24T19:38:07.139955Z'} -
New CVE Received by [email protected]
Aug. 21, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'typemill', 'product': 'typemill', 'versions': [{'status': 'affected', 'version': '< 2.23.0'}]}] Added Description Typemill is a flat-file, Markdown-based content management system designed for informational documentation websites. Versions prior to 2.23.0 are vulnerable to stored HTML attribute injection in the page metadata fields (`og:title` and `og:description`). An authenticated user with permission to modify page metadata can inject arbitrary HTML attributes into generated `<meta>` tags due to missing output encoding. Under certain browser or DOM interaction scenarios, this may lead to stored cross-site scripting (XSS). Version 2.23.0 fixes the issue. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N Added CWE CWE-79 Added Reference https://github.com/typemill/typemill/releases/tag/v2.23.0 Added Reference https://github.com/typemill/typemill/security/advisories/GHSA-wg6r-jwmr-p7gr