CVE-2021-29503

HedgeDoc is a platform to write and share markdown. HedgeDoc before version 1.8.2 is vulnerable to a cross-site scripting attack using the YAML-metadata of a note. An attacker with write access to a note can embed HTML tags in the Open Graph metadata section of the note, resulting in the frontend...

CVE-2021-29475

HedgeDoc formerly known as CodiMD is an open-source collaborative markdown editor. An attacker is able to receive arbitrary files from the file system when exporting a note to PDF. Since the code injection has to take place as note content, there fore this exploit requires the attackers ability t...

CVE-2025-32391

HedgeDoc is an open source, real-time, collaborative, markdown notes application. Prior to 1.10.3, a malicious SVG file uploaded to HedgeDoc results in the possibility of XSS when opened in a new tab instead of the editor itself. The XSS is possible by exploiting the JSONP capabilities of GitHub...

CVE-2025-32391

HedgeDoc is an open source, real-time, collaborative, markdown notes application. Prior to 1.10.3, a malicious SVG file uploaded to HedgeDoc results in the possibility of XSS when opened in a new tab instead of the editor itself. The XSS is possible by exploiting the JSONP capabilities of GitHub...

CVE-2025-32391

HedgeDoc has a vulnerability (CVE-2025-32391) up to version 1.10.2 where uploading a malicious SVG can trigger cross-site scripting when the file is opened in a new tab, via the GitHub Gist JSONP embedding feature. The issue affects instances using the local filesystem upload backend or configura...

CVE-2025-32391 HedgeDoc allows XSS possibility through malicious SVG uploads

HedgeDoc is an open source, real-time, collaborative, markdown notes application. Prior to 1.10.3, a malicious SVG file uploaded to HedgeDoc results in the possibility of XSS when opened in a new tab instead of the editor itself. The XSS is possible by exploiting the JSONP capabilities of GitHub...

CVE-2025-32391 HedgeDoc allows XSS possibility through malicious SVG uploads

HedgeDoc is an open source, real-time, collaborative, markdown notes application. Prior to 1.10.3, a malicious SVG file uploaded to HedgeDoc results in the possibility of XSS when opened in a new tab instead of the editor itself. The XSS is possible by exploiting the JSONP capabilities of GitHub...

CVE-2025-32391 HedgeDoc allows XSS possibility through malicious SVG uploads

HedgeDoc is an open source, real-time, collaborative, markdown notes application. Prior to 1.10.3, a malicious SVG file uploaded to HedgeDoc results in the possibility of XSS when opened in a new tab instead of the editor itself. The XSS is possible by exploiting the JSONP capabilities of GitHub...

HedgeDoc 跨站脚本漏洞

HedgeDoc is a Javascript-based real-time editing and sharing platform for Markdown documents from the HedgeDoc team. A cross-site scripting vulnerability exists in HedgeDoc versions prior to 1.10.3, which stems from a malicious SVG file that could lead to a cross-site scripting attack...

PT-2025-15983 · Github +1 · Github Gist +1

Name of the Vulnerable Software and Affected Versions: HedgeDoc versions prior to 1.10.3 Description: The issue arises when a malicious SVG file is uploaded to HedgeDoc, potentially leading to cross-site scripting XSS when the file is opened in a new tab. This is possible due to the exploitation ...

CVE-2021-39175

HedgeDoc is a platform to write and share markdown. In versions prior to 1.9.0, an unauthenticated attacker can inject arbitrary JavaScript into the speaker-notes of the slide-mode feature by embedding an iframe hosting the malicious code into the slides or by embedding the HedgeDoc instance into...

CVE-2020-26287

HedgeDoc is a collaborative platform for writing and sharing markdown. In HedgeDoc before version 1.7.1 an attacker can inject arbitrary script tags in HedgeDoc notes using mermaid diagrams. Our content security policy prevents loading scripts from most locations, but www.google-analytics.com is...

CVE-2020-26286

HedgeDoc is a collaborative platform for writing and sharing markdown. In HedgeDoc before version 1.7.1 an unauthenticated attacker can upload arbitrary files to the upload storage backend including HTML, JS and PHP files. The problem is patched in HedgeDoc 1.7.1. You should however verify that...

Malicious code in hedgedoc-api (npm)

--- -= Per source details. Do not edit below this line.=- Source: ghsa-malware da3beadfe66abf674d7b17ba8619980aaa9f69e6bc510dbe8966e0a7c1902ab2 Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be...

MAL-2024-9050 Malicious code in hedgedoc-api (npm)

--- -= Per source details. Do not edit below this line.=- Source: ghsa-malware da3beadfe66abf674d7b17ba8619980aaa9f69e6bc510dbe8966e0a7c1902ab2 Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be...

CVE-2024-45308

HedgeDoc is an open source, real-time, collaborative, markdown notes application. When using HedgeDoc 1 with MySQL or MariaDB, it is possible to create notes with an alias matching the ID of existing notes. The affected existing note can then not be accessed anymore and is effectively hidden by t...

CVE-2024-45308 MySQL & free URL mode allows to hide existing notes in hedgedoc

HedgeDoc is an open source, real-time, collaborative, markdown notes application. When using HedgeDoc 1 with MySQL or MariaDB, it is possible to create notes with an alias matching the ID of existing notes. The affected existing note can then not be accessed anymore and is effectively hidden by t...

CVE-2024-45308

HedgeDoc (the HedgeDoc project) contains a vulnerability affecting deployments using MySQL or MariaDB where an alias can be created equal to the ID of an existing note. The new note’s alias hides the original note and, in freeURL mode, can be created by users with appropriate permissions or, depe...

CVE-2024-45308 MySQL & free URL mode allows to hide existing notes in hedgedoc

HedgeDoc is an open source, real-time, collaborative, markdown notes application. When using HedgeDoc 1 with MySQL or MariaDB, it is possible to create notes with an alias matching the ID of existing notes. The affected existing note can then not be accessed anymore and is effectively hidden by t...

CVE-2024-45308 MySQL & free URL mode allows to hide existing notes in hedgedoc

HedgeDoc is an open source, real-time, collaborative, markdown notes application. When using HedgeDoc 1 with MySQL or MariaDB, it is possible to create notes with an alias matching the ID of existing notes. The affected existing note can then not be accessed anymore and is effectively hidden by t...