GitHubNewbie0 odf-kit cross-site scripting vulnerability

In version 0.10.0 through 0.14.2 of the odf-kit for GitHubNewbie, there is a cross-site scripting vulnerability. This occurs because the HTML renderer fails to escape inline CSS style values; attributes such as fo:color are directly concatenated into the style attribute, potentially enabling...

CLSA-2026-1791320512 osbuild-composer: Fix of CVE-2026-42502

CVE-2026-42502: treat foster-parented raw-text elements in foreign content as escaped rather than literal in the vendored golang.org/x/net/html renderer, preventing a cross-site scripting bypass when a parsed tree is re-rendered...

PYSEC-2026-3863 Mistune: Denial of Service — RecursionError via Excessive Emphasis Markers in Markdown

Summary Mistune v3.3.2 is vulnerable to a Denial of Service DoS attack via uncontrolled recursion in the HTML rendering of deeply-nested emphasis tokens. By submitting Markdown containing approximately 1,000 consecutive asterisk characters, an attacker causes the Python process to crash with...

CVE-2026-76098 Mistune has Denial of Service — RecursionError via Excessive Emphasis Markers in Markdown

Mistune is a Python Markdown parser with renderers and plugins. Versions 3.3.0 through 3.3.2 are vulnerable to DoS through deeply nested tokens. HTML rendering creates deeply nested emphasis tokens from consecutive asterisk characters, and recursive rendering in HTMLRenderer.rendertoken can excee...

EUVD-2026-54146

A vulnerability was determined in DataGear up to 5.0.0. The impacted element is the function HtmlTplDashboardWidgetHtmlRenderer of the file HtmlTplDashboardWidgetHtmlRenderer.java of the component Chart Name Handler. This manipulation of the argument Title causes cross site scripting. It is...

CVE-2026-19110

DataGear up to 5.0.0 contains a stored cross-site scripting issue in the function HtmlTplDashboardWidgetHtmlRenderer of HtmlTplDashboardWidgetHtmlRenderer.java within the Chart Name Handler. The vulnerability is triggered by manipulation of the Title argument, allowing remote initiation of the at...

SUSE CVE-2026-5160

Versions of the package github.com/yuin/goldmark/renderer/html before 1.7.17 are vulnerable to Cross-site Scripting XSS due to improper ordering of URL validation and normalization. The renderer validates link destinations using a prefix-based check IsDangerousURL before resolving HTML entities...

Mistune renderers/html.safe_url: HARMFUL_PROTOCOLS list misses legacy and chained schemes that historically chain to `javascript:` execution

Summary Type: URL-scheme allowlist gap. The safeurl filter only blocks the four schemes javascript:, vbscript:, file:, data:. Several other schemes are accepted into rendered and tags despite being known XSS vectors in legacy or chain-handling browsers. The same gap applies to direct links,...

EUVD-2026-42331

Mistune: XSS via percent-encoded javascript URI bypass in safeurl...

DEBIAN-CVE-2026-59929

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, the safeurl filter in src/mistune/renderers/html.py blocks only javascript:, vbscript:, file:, and data: schemes, allowing legacy or chained schemes such as feed:, view-source:, jar:, livescript:, mocha:, ms-its:, mk:...

CVE-2026-59923

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, HTMLRenderer.safeurl does not block percent-encoded javascript URIs, allowing attacker-supplied Markdown links or images to bypass URL protections and execute script in rendered HTML. This issue is fixed in version...

PYSEC-2026-2211

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, HTMLRenderer.safeurl does not block percent-encoded javascript URIs, allowing attacker-supplied Markdown links or images to bypass URL protections and execute script in rendered HTML. This issue is fixed in version...

PYSEC-2026-2211

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, HTMLRenderer.safeurl does not block percent-encoded javascript URIs, allowing attacker-supplied Markdown links or images to bypass URL protections and execute script in rendered HTML. This issue is fixed in version...

CVE-2026-59923 Mistune: XSS via percent-encoded javascript URI bypass in safe_url()

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, HTMLRenderer.safeurl does not block percent-encoded javascript URIs, allowing attacker-supplied Markdown links or images to bypass URL protections and execute script in rendered HTML. This issue is fixed in version...

CVE-2026-59923

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, HTMLRenderer.safeurl does not block percent-encoded javascript URIs, allowing attacker-supplied Markdown links or images to bypass URL protections and execute script in rendered HTML. This issue is fixed in version...

CVE-2026-44897

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.2.1, HTMLRenderer.heading builds the opening tag by string-concatenating the id attribute value directly into the HTML — with no call to escape, safeentity, or any other sanitisation function. A double-quote character " in...

DEBIAN-CVE-2026-44897

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.2.1, HTMLRenderer.heading builds the opening tag by string-concatenating the id attribute value directly into the HTML — with no call to escape, safeentity, or any other sanitisation function. A double-quote character " in...

UBUNTU-CVE-2026-44897

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.2.1, HTMLRenderer.heading builds the opening tag by string-concatenating the id attribute value directly into the HTML — with no call to escape, safeentity, or any other sanitisation function. A double-quote character " in...

CVE-2026-44897

Mistune prior to 3.2.1 constructs the HTML heading tag by appending the id attribute value directly, without escaping. If the heading_id callback returns raw text containing quotes or markup, an attacker can inject arbitrary attributes (e.g., onmouseover, src, href) into the element, enabling XS...

CVE-2026-44896 Mistune: XSS via unescaped figclass/figwidth in Figure directive

Mistune is a Python Markdown parser with renderers and plugins. In 3.2.0 and earlier, in src/mistune/directives/image.py, the renderfigure function concatenates figclass and figwidth options directly into HTML attributes without escaping. This allows attribute injection and XSS even when...