PT-2026-65497

Pivotick contains a DOM-based cross-site scripting vulnerability in its generic UI element resolution and icon-rendering utilities. The tryResolveHTMLElement function treated any resolved string as HTML markup by assigning it to a element through innerHTML. Strings derived from untrusted graph...

CVE-2026-17496 NoteGen chat preview XSS via unsanitized AI/skill HTML rendering

NoteGen before 0.32.0 renders AI chat responses with markdown-it configured with html:true and injects the result into the DOM via dangerouslySetInnerHTML in chat-preview, without HTML sanitization and with CSP set to null. Attacker-controlled content that reaches the model prompt for example a...

CVE-2026-17496

NoteGen prior to 0.32.0 renders AI chat responses using markdown-it with html:true and injects output into the chat-preview DOM via dangerouslySetInnerHTML without HTML sanitization and with CSP set to null. Attackers can inject content (e.g., a malicious REFERENCE.md) that instructs the model to...

Cross-site Scripting (XSS)

Mistune is vulnerable to Cross-Site Scripting XSS. The vulnerability is due to improper escaping of the Admonition directive :class: option when rendering HTML, which allows an attacker to inject malicious attributes and execute arbitrary JavaScript in a victim's browser...

CVE-2026-65605

SiYuan before v3.7.2 contains a stored cross-site scripting vulnerability in Attribute View database cell rendering. A Template column value is rendered as HTML via text/template without auto-escaping, and EscapeHTML is only applied when HasUnclosedHtmlTag returns true; because balanced...

PraisonAI: HTTPApproval dashboard renders tool arguments as raw HTML, allowing approval-page XSS to approve dangerous tools

HTTPApproval dashboard renders tool arguments as raw HTML, allowing approval-page XSS to approve dangerous tools Summarypraisonai.bots.HTTPApproval renders pending tool approval arguments directlyinto the approval dashboard HTML. An attacker-controlled tool argument caninject JavaScript into that...

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling through the render process. An attacker can exhaust system resources and cause the PHP process to crash by submitting a specially crafted HTML document containing a high-entropy,...

ip-address: ip-address: Cross-site scripting via improper HTML escaping of untrusted input

A flaw was found in ip-address, a JavaScript library for parsing and manipulating IPv4 and IPv6 addresses. This vulnerability allows a remote attacker to perform cross-site scripting XSS by providing untrusted input to the Address6 constructor. When an application renders the output of...

CVE-2026-49210

Symfony UX: XSS in LiveComponent due to ChildComponentPartialRenderer::createHtml() injecting client-controlled children[id].tag into HTML without escaping. Affected: 2.8.0–2.36.0 and 3.1.0. Exploitation potential includes arbitrary HTML, e.g., [removed] tags, on re-renders containing at least on...

PYSEC-2026-2731 Open WebUI has stored XSS via unsanitized Office/Excel/DOCX file preview rendering ({@html} without DOMPurify)

Related advisory This 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...

Open WebUI has stored XSS via the HTML renedering view

SummaryThrough the HTML rendering view, scripts can be injected and executed. The finding resulted from a penetration test for a customer. It is suspected that the root cause of the issue lies within the core of Open WebUI, which is why it is being reported as a security issue here. Tested on Ope...

PYSEC-2026-2704 Open WebUI has stored XSS via the HTML renedering view

Summary Through the HTML rendering view, scripts can be injected and executed. The finding resulted from a penetration test for a customer. It is suspected that the root cause of the issue lies within the core of Open WebUI, which is why it is being reported as a security issue here. Tested on Op...

PYSEC-2026-2744 Open WebUI has stored XSS in Excel file preview

Summary Excel file attachments are previewed in an unsafe way. A crafted XLSX file payload can be used to cause the sheetjs function sheettohtml to embed an XSS payload into the generated HTML. This is subsequently added to the DOM unsanitized via @html causing the payload to trigger. Details The...

PYSEC-2026-2910 PraisonAI Vulnerable to Stored XSS via Unsanitized Agent Output in HTML Rendering (nh3 Not a Required Dependency)

Summary The Flask API endpoint in src/praisonai/api.py renders agent output as HTML without effective sanitization. The sanitizehtml function relies on the nh3 library, which is not listed as a required or optional dependency in pyproject.toml. When nh3 is absent the default installation, the...

PraisonAI Vulnerable to Stored XSS via Unsanitized Agent Output in HTML Rendering (nh3 Not a Required Dependency)

SummaryThe Flask API endpoint in src/praisonai/api.py renders agent output as HTML without effective sanitization. The sanitizehtml function relies on the nh3 library, which is not listed as a required or optional dependency in pyproject.toml. When nh3 is absent the default installation, the...

PT-2026-59373

Related advisory This 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.sheet to html output rendered via @html excelHtml without DOMPurify — was reintroduced sometim...

PT-2026-59171

Summary The ha-mcp OAuth consent form renders user-controlled parameters via Python f-strings with no HTML escaping. An attacker who can reach the OAuth endpoint and convince the server operator to follow a crafted authorization URL could execute JavaScript in the operator's browser. This affects...

PT-2026-59545

Summary The Flask API endpoint in src/praisonai/api.py renders agent output as HTML without effective sanitization. The sanitize html function relies on the nh3 library, which is not listed as a required or optional dependency in pyproject.toml. When nh3 is absent the default installation, the...

PT-2026-59348

Summary Through the HTML rendering view, scripts can be injected and executed. The finding resulted from a penetration test for a customer. It is suspected that the root cause of the issue lies within the core of Open WebUI, which is why it is being reported as a security issue here. Tested on Op...

SUSE 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...