Cross-site Scripting (XSS)

Overview open-webui is an Open WebUI Affected versions of this package are vulnerable to Cross-site Scripting XSS in the embeds property of response messages, which is loaded into an iFrame with an insufficiently restrictive sandbox. An attacker can execute arbitrary JavaScript in the context of...

GHSA-XC8P-9RR6-97R2 Open WebUI vulnerable to Stored XSS via iFrame in citations model

Summary Manually modifying chat history allows setting the html property within document metadata. This causes the frontend to enter a code path that treats document contents as HTML, and render them in an iFrame when the citation is previewed. This allows stored XSS via a weaponised document...

Cross-site Scripting (XSS)

Overview open-webui is an Open WebUI Affected versions of this package are vulnerable to Cross-site Scripting XSS in the CitationModal process. An attacker can execute arbitrary JavaScript in the context of another user's session by crafting a malicious document payload and manipulating the html...

Cross-site Scripting (XSS)

Overview open-webui is an Open WebUI Affected versions of this package are vulnerable to Cross-site Scripting XSS in the rendering of chat messages containing certain HTML tags using the @html functionality in Svelte. An attacker can execute arbitrary JavaScript in the context of a user's browser...

GHSA-9F4F-JV96-8766 Open WebUI vulnerable to stored XSS via unescaped markdown token in MarkdownTokens.svelte leading to full account takeover and RCE via functions

Summary A vulnerability in the way certain html tags in chat messages are rendered allows attackers to inject JavaScript code into a chat transcript. The JavaScript code will be executed in the user's browser every time that chat transcript is opened, allowing attackers to retrieve the user's...

EUVD-2025-13498

Open WebUI vulnerable to stored XSS via unescaped markdown token in MarkdownTokens.svelte leading to full account takeover and RCE via functions...

GHSA-8GH5-QQH8-HQ3X Open WebUI allows limited stored XSS vila uploaded html file

Summary Low privileged users can upload HTML files which contain JavaScript code via the /api/v1/files/ backend endpoint. This endpoint returns a file id, which can be used to open the file in the browser and trigger the JavaScript code in the user's browser. Under the default settings, files...

Open WebUI allows limited stored XSS vila uploaded html file

Summary Low privileged users can upload HTML files which contain JavaScript code via the /api/v1/files/ backend endpoint. This endpoint returns a file id, which can be used to open the file in the browser and trigger the JavaScript code in the user's browser. Under the default settings, files...

Cross-site Scripting (XSS)

Overview open-webui is an Open WebUI Affected versions of this package are vulnerable to Cross-site Scripting XSS in the file upload process. An attacker can execute arbitrary JavaScript code in the context of another user's browser by uploading a crafted HTML file and convincing an admin or the...

CVE-2025-12799 Jastow: jastow cross-site scripting attack due to unsanitized uri

A flaw was found in Jastow. Jastow is vulnerable to Cross-Site Scripting XSS attack. If using a set of combined configuration to allow unescaped characters in URL with embedded Undertow and Jastow, a server might be vulnerable to improper input handling...

CVE-2025-12799

A flaw was found in Jastow. Jastow is vulnerable to Cross-Site Scripting XSS attack. If using a set of combined configuration to allow unescaped characters in URL with embedded Undertow and Jastow, a server might be vulnerable to improper input handling...

CVE-2025-12799 Jastow: jastow cross-site scripting attack due to unsanitized uri

A flaw was found in Jastow. Jastow is vulnerable to Cross-Site Scripting XSS attack. If using a set of combined configuration to allow unescaped characters in URL with embedded Undertow and Jastow, a server might be vulnerable to improper input handling...

CVE-2025-12799

CVE-2025-12799 affects Jastow and is described as a Cross-Site Scripting (XSS) vulnerability that arises when a configuration allows unescaped characters in URLs with embedded Undertow and Jastow, indicating improper input handling. The CVSS 3.1 base vector shows a Network attack vector, high aut...

EUVD-2025-210439

A flaw was found in Jastow. Jastow is vulnerable to Cross-Site Scripting XSS attack. If using a set of combined configuration to allow unescaped characters in URL with embedded Undertow and Jastow, a server might be vulnerable to improper input handling...

CVE-2025-12799

A flaw was found in Jastow. Jastow is vulnerable to Cross-Site Scripting XSS attack. If using a set of combined configuration to allow unescaped characters in URL with embedded Undertow and Jastow, a server might be vulnerable to improper input handling. Mitigation It is possible to contruct...

PYSEC-2026-1402 GI-DocGen vulnerable to Reflected XSS via unescaped query strings

A flaw was found in GI-DocGen. This vulnerability allows arbitrary JavaScript execution in the context of the page — enabling DOM access, session cookie theft and other client-side attacks — via a crafted URL that supplies a malicious value to the q GET parameter reflected DOM XSS...

PYSEC-2026-1668 MobSF has Stored XSS via Manifest Analysis - Dialer Code Host Field

Summary A Stored Cross-site Scripting XSS vulnerability in MobSF's Android manifest analysis allows an attacker to execute arbitrary JavaScript in the context of a victim's browser session by uploading a malicious APK. The android:host attribute from elements is rendered in HTML reports without...

PYSEC-2026-1502 Label Studio is vulnerable to full account takeover by chaining Stored XSS + IDOR in User Profile via custom_hotkeys field

Prologue These vulnerabilities have been found and chained by DCODX-AI. Validation of the exploit chain has been confirmed manually. Summary A persistent stored cross-site scripting XSS vulnerability exists in the customhotkeys functionality of the application. An authenticated attacker or one wh...

PYSEC-2026-1698 NiceGUI is vulnerable to XSS via Unescaped URL in ui.navigate.history.push() / replace()

Summary XSS risk exists in NiceGUI when developers pass attacker-controlled strings into ui.navigate.history.push or ui.navigate.history.replace. These helpers are documented as History API wrappers for updating the browser URL without page reload. However, if the URL argument is embedded into...

PYSEC-2026-1701 NiceGUI apps are vulnerable to XSS which uses `ui.sub_pages` and render arbitrary user-provided links

Summary An unsafe implementation in the click event listener used by ui.subpages, combined with attacker-controlled link rendering on the page, causes an XSS when the user actively clicks on the link. Details 1. On click, eventually subpagesnavigate event is emitted...