CVE-2026-86751 Snipe-IT before 8.7.0 Arbitrary File Read and SSRF via Markdown

Snipe-IT before 8.7.0 fails to properly sanitize markdown image syntax in note fields, allowing authenticated users to read arbitrary server files and issue server-side HTTP requests. Attackers can submit markdown image syntax in checkout acceptance notes that survive HTML escaping, are expanded ...

CVE-2026-86741 Snipe-IT before 8.7.0 Arbitrary File Read and SSRF via Category EULA

Snipe-IT versions before 8.7.0 fail to sanitize the category EULA text field before rendering it in checkout confirmation emails. Attackers with low-privilege permissions can inject markdown image syntax or raw HTML img tags pointing to local files or remote URLs, which the mail auto-embed librar...

CVE-2026-86741 Snipe-IT before 8.7.0 Arbitrary File Read and SSRF via Category EULA

Snipe-IT versions before 8.7.0 fail to sanitize the category EULA text field before rendering it in checkout confirmation emails. Attackers with low-privilege permissions can inject markdown image syntax or raw HTML img tags pointing to local files or remote URLs, which the mail auto-embed librar...

Ruby on Rails: Action Text to_markdown: <code>/<pre> content escapes its delimiter, letting a stored body inject arbitrary Markdown

Summary ActionText::Contenttomarkdown escapes text nodes so that a stored rich text body cannot turn into Markdown syntax. Text whose immediate parent is or is exempt from that escaping MarkdownConversion::SKIPESCAPINGPARENTS and is instead kept inert by the delimiter its visitor wraps around it...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: obs-server (UTSA-2026-093229)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-093229 advisory. A Improper Neutralization of Input During Web Page Generation 'Cross-site Scripting' vulnerability in Open Build Service allows remote attackers to store JS code in...

PT-2026-78678

Name of the Vulnerable Software and Affected Versions lemmy-ui versions prior to 0.19.19-beta.1 Description lemmy-ui renders Markdown for post bodies, comment bodies, private messages, and community and site sidebars through the mdToHtml function in src/shared/markdown.ts. This function returns a...

CVE-2026-59710

A flaw was found in Showdown. This vulnerability, a stored cross-site scripting XSS issue, allows an attacker to inject malicious code into web pages. By exploiting unescaped table header ID attributes in markdown, an attacker can embed arbitrary HTML and script-executing elements. When untrusted...

Protection Mechanism Failure

Overview Affected versions of this package are vulnerable to Protection Mechanism Failure via the rendering of AI bot tool result posts containing injected markdown image syntax. An attacker can exfiltrate data to an attacker-controlled server by crafting malicious content that is rendered by a...

EUVD-2026-38469

OpenHarness /issue and /prcomments slash commands lack remoteinvocable=False protection, allowing remote channel senders to write attacker-controlled Markdown into project context files. Admitted remote attackers can inject malicious content into .openharness/issue.md and .openharness/prcomments....

CVE-2026-56696

OpenHarness /issue and /prcomments slash commands lack remoteinvocable=False protection, allowing remote channel senders to write attacker-controlled Markdown into project context files. Admitted remote attackers can inject malicious content into .openharness/issue.md and .openharness/prcomments....

PT-2026-51534

Name of the Vulnerable Software and Affected Versions OpenHarness affected versions not specified Description The /issue and /pr comments slash commands lack remote invocable=False protection. This allows remote channel senders to write attacker-controlled Markdown into project context files,...

CVE-2026-56696: Missing Authorization

OpenHarness /issue and /prcomments slash commands lack remoteinvocable=False protection, allowing remote channel senders to write attacker-controlled Markdown into project context files. Admitted remote attackers can inject malicious content into .openharness/issue.md and .openharness/prcomments....

PT-2026-31951

Name of the Vulnerable Software and Affected Versions: Vikunja versions prior to 2.3.0 Description: Vikunja, a self-hosted task management platform, was found to have an issue where task titles were directly embedded into Markdown link syntax in overdue email notifications without proper escaping...

CVE-2026-33742

Invoice Ninja (Laravel-based) v5.13.0 contains a stored XSS flaw in product notes through Markdown rendering, where raw HTML output was not sanitized before being embedded in invoice templates. The issue is explicitly fixed in v5.13.4 by applying purify::clean() to Markdown output. The vulnerabil...

CVE-2026-33742 Invoice Ninja has Stored XSS via Markdown HTML Injection in Product Notes

Invoice Ninja is a source-available invoice, quote, project and time-tracking app built with Laravel. Product notes fields in Invoice Ninja v5.13.0 allow raw HTML via Markdown rendering, enabling stored XSS. The Markdown parser output was not sanitized with purify::clean before being included in...

CVE-2026-27568 AVideo has Stored Cross-Site Scripting via Markdown Comment Injection

WWBN AVideo is an open source video platform. Prior to version 21.0, AVideo allows Markdown in video comments and uses Parsedown v1.7.4 without Safe Mode enabled. Markdown links are not sufficiently sanitized, allowing javascript: URIs to be rendered as clickable links. An authenticated...

GHSA-RCQW-6466-3MV7 AVideo has Stored Cross-Site Scripting via Markdown Comment Injection

Vulnerability Type Stored Cross-Site Scripting XSS — CWE-79. Affected Product/Versions AVideo 18.0. Root Cause Summary AVideo allows Markdown in video comments and uses Parsedown v1.7.4 without Safe Mode enabled. Markdown links are not sufficiently sanitized, allowing javascript: URIs to be...

CVE-2025-42620 CSRF vulnerability in CIRCL Vulnerability-Lookup

In affected versions, vulnerability-lookup handled user-controlled content in comments and bundles in an unsafe way, which could lead to stored Cross-Site Scripting XSS. On the backend, the relatedvulnerabilities field of bundles accepted arbitrary strings without format validation or proper...

CVE-2022-36573

A cross-site scripting XSS vulnerability in Pagekit CMS v1.0.18 allows attackers to execute arbitrary web scripts or HTML via a crafted payload injected into the Markdown text box under /blog/post/edit...

Markdown injection into github comment

Description Users can donate for builds by tipping [email protected]. There's a github action that will thank the user in a comment. The name is not sanitized and by using one such as the following, attackers can inject their own markdown into the comment. foo The "" breaks out of the context,...