Open WebUI has stored XSS via unsanitized Office/Excel/DOCX file preview rendering ({@html} without DOMPurify)

Related advisoryThis advisory tracks a regression of the original Excel-preview XSS that was publicly disclosed and patched under GHSA-jwf8-pv5p-vhmc patched in v0.8.0. The same root cause — XLSX.utils.sheettohtml output rendered via @html excelHtml without DOMPurify — was reintroduced sometime...

CVE-2026-59923

A flaw was found in Mistune, a Python Markdown parser. This vulnerability allows an attacker to bypass URL protections by using specially crafted Markdown links or images containing percent-encoded javascript URIs. This can lead to the execution of arbitrary scripts in the rendered HTML,...

EUVD-2026-42687

Kirby is an open-source content management system. Prior to 4.9.4 and 5.4.4, Kirby sites and plugins that use the writer or list fields or call Dom::sanitize, Sane::sanitize, Sane::Html::sanitize, Sane::Svg::sanitize, Sane::Xml::sanitize, Sane::sanitizeFile, or file sanitizeContents with untruste...

CVE-2026-54002 Kirby: Cross-site scripting (XSS) from incomplete HTML/XML sanitization in `Dom::sanitize()`

Kirby is an open-source content management system. Prior to 4.9.4 and 5.4.4, Kirby sites and plugins that use the writer or list fields or call Dom::sanitize, Sane::sanitize, Sane::Html::sanitize, Sane::Svg::sanitize, Sane::Xml::sanitize, Sane::sanitizeFile, or file sanitizeContents with untruste...

Cross-site Scripting (XSS)

Overview jodit is a Jodit is awesome and usefully wysiwyg editor with filebrowser Affected versions of this package are vulnerable to Cross-site Scripting XSS via the safeHTML sanitizer in src/core/helpers/html/safe-html.ts and the clean-html plugin’s value-set/on-change sanitization paths. An...

Cross-site Scripting (XSS)

Overview org.webjars.npm:jodit is a Jodit is awesome and usefully wysiwyg editor with filebrowser Affected versions of this package are vulnerable to Cross-site Scripting XSS via the safeHTML sanitizer in src/core/helpers/html/safe-html.ts and the clean-html plugin’s value-set/on-change...

golang.org/x/net/html: golang.org/x/net/html: Arbitrary code execution via Cross-Site Scripting

A flaw was found in golang.org/x/net/html. A remote attacker could exploit this vulnerability by providing specially crafted HTML. When this arbitrary HTML is parsed and rendered, it can result in an unexpected HTML tree, bypassing input sanitization. This can be leveraged to execute Cross-Site...

PT-2026-55844

justhtml: to markdown code-span blank-line breakout enables XSS Summary In justhtml 0.9.0 through 1.21.0, to markdown renders text and text inside a link as an inline Markdown code span whose only protection is backtick-fence length. A blank line in that text terminates the inline span in any...

Gogs has DOM-based XSS via Milestone Name on New Issue Page

Summary The fix for GHSA-vgjm-2cpf-4g7c DOM-based XSS via milestone selection was only applied to templates/repo/issue/viewcontent.tmpl but not to templates/repo/issue/newform.tmpl. An attacker can store an HTML/JavaScript payload in a milestone name, and when any user opens the New Issue page an...

CVE-2026-55409

Filament is a collection of full-stack components for accelerated Laravel development. From 3.0.0 until 3.3.53, a disabled RichEditor field rendered its raw state without sanitizing HTML. Where the data stored in this field's state isn't sanitized already when the form state was filled, an attack...

Cross-site Scripting (XSS)

Overview @jupyterlab/git is an A JupyterLab extension for version control using git Affected versions of this package are vulnerable to Cross-site Scripting XSS in the createHeader method. An attacker can execute arbitrary JavaScript in another user's browser session by crafting a malicious...

PT-2026-51065

Name of the Vulnerable Software and Affected Versions jupyterlab-git affected versions not specified Description A stored cross-site scripting XSS issue exists in the PlainTextDiff.ts component of the jupyterlab-git extension. The createHeader function passes Git filenames directly to innerHTML...

CVE-2026-44644 LiquidJS's strip_html filter bypass via newline characters in HTML tags enables XSS

LiquidJS is a Shopify/GitHub Pages compatible template engine written in pure JavaScript. Versions 10.25.7 and below are vulnerable to XSS through a flaw in the striphtml filter logic. The striphtml filter is intended to remove HTML tags from a string before rendering, and is widely used as an XS...

EUVD-2026-37683

Stored cross-site scripting XSS in NewsItemApiController In SimplCommerce prior to commit 6142d3b5 allows an authenticated administrator to execute arbitrary JavaScript via the ShortContent and FullContent fields, which are stored without HTML sanitization and rendered unencoded via @Html.Raw...

PT-2026-50382

Stored cross-site scripting XSS in NewsItemApiController In SimplCommerce prior to commit 6142d3b5 allows an authenticated administrator to execute arbitrary JavaScript via the ShortContent and FullContent fields, which are stored without HTML sanitization and rendered unencoded via @Html.Raw...

Cross-site Scripting (XSS)

Overview bleach is a whitlist-based HTML sanitizing library that escapes or strips markup and attributes. Affected versions of this package are vulnerable to Cross-site Scripting XSS via the clean function. An attacker can execute arbitrary JavaScript code in the context of the user's browser by...

EUVD-2026-35496

md-fileserver allows for local viewing of markdown files in a browser. Prior to version 1.10.3, a cross-site scripting XSS vulnerability exists in the application’s Markdown rendering logic. When user-supplied Markdown content is rendered, embedded raw HTML—including tags—is processed and injecte...

CVE-2026-39107

A Cross Site Scripting vulnerability exists in the Kimi AI v1.0 web interface's 'Preview' feature. The application fails to properly sanitize or encode HTML/JavaScript payloads generated by the AI model. When a user switches to the 'Preview' tab to view AI-generated code, the malicious payload is...

CVE-2026-7182

Diagram's export module is vulnerable to Path Traversal in src attribute due to lack of HTML sanitization. An unauthenticated user could craft the html payload which could include local files from the server and display them in the generated pdf. This issue was fixed in version 1.1.1...

CVE-2026-41552

PDF Export Module used in DHTMLX's products Gantt and Scheduler is vulnerable to Path Traversal due to lack of HTML sanitization. An unauthenticated user could craft the html payload which could include local files from the server and display them in the generated PDF. This issue was fixed in PDF...