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...

PYSEC-2026-1702 NiceGUI apps which use `ui.sub_pages` vulnerable to zero-click XSS

Summary An unsafe implementation in the pushstate event listener used by ui.subpages allows an attacker to manipulate the fragment identifier of the URL, which they can do despite being cross-site, using an iframe. Details The problem is traced as follows: 1. On pushstate, handleStateEvent is...

PYSEC-2026-1696 NiceGUI Stored/Reflected XSS in ui.interactive_image via unsanitized SVG content

Summary A Cross-Site Scripting XSS vulnerability exists in the ui.interactiveimage component of NiceGUI v3.3.1 and earlier. The component renders SVG content using Vue's v-html directive without any sanitization. This allows attackers to inject malicious HTML or JavaScript via the SVG tag. Detail...

PYSEC-2026-1937 Spotipy has a XSS vulnerability in its OAuth callback server

Summary XSS vulnerability in OAuth callback server allows JavaScript injection through unsanitized error parameter. Attackers can execute arbitrary JavaScript in the user's browser during OAuth authentication. Details Vulnerable Code: spotipy/oauth2.py lines 1238-1274 RequestHandler.doGET The...

PYSEC-2026-1741 Open WebUI vulnerable to Stored DOM XSS via prompts when 'Insert Prompt as Rich Text' is enabled resulting in ATO/RCE

Summary The functionality that inserts custom prompts into the chat window is vulnerable to DOM XSS when 'Insert Prompt as Rich Text' is enabled, since the prompt body is assigned to the DOM sink .innerHtml without sanitisation. Any user with permissions to create prompts can abuse this to plant ...

PYSEC-2026-1714 OctoPrint vulnerable to XSS in Action Commands Notification and Prompt

Impact OctoPrint versions up to and including 1.11.3 are affected by a vulnerability that allows injection of arbitrary HTML and JavaScript into Action Command notification and prompt popups generated by the printer. An attacker who successfully convinces a victim to print a specially crafted fil...

PYSEC-2026-1247 CKAN vulnerable to stored XSS in resource description

Impact The helpers.markdownextract function did not perform sufficient sanitization of input data before wrapping in an HTML literal element. This helper is used to render user-provided data on dataset, resource, organization or group pages plus any page provided by an extension that used that...

PYSEC-2026-1364 FastMCP vulnerable to reflected XSS in client's callback page

Summary While setting up an oauth client, it was noticed that the callback page hosted by the client during the flow embeds user-controlled content without escaping or sanitizing it. This leads to a reflected Cross-Site-Scripting vulnerability. Details The affected code is located in...

PYSEC-2026-1453 Home Assistant has Stored XSS vulnerability in Energy dashboard from Energy Entity Name

Summary An authenticated party can add a malicious name to the Energy entity, allowing for Cross-Site Scripting attacks against anyone who can see the Energy dashboard, when they hover over any information point The blue bar in the picture below An alternative, and more impactful scenario, is tha...

PYSEC-2026-1816 pyLoad CNL and captcha handlers allow Code Injection via unsanitized parameters

Summary pyLoad web interface contained insufficient input validation in both the Captcha script endpoint and the Click'N'Load CNL Blueprint. This flaw allowed untrusted user input to be processed unsafely, which could be exploited by an attacker to inject arbitrary content into the web UI or...

PYSEC-2026-1699 NiceGUI has a Reflected XSS

Summary A Cross-Site Scripting XSS risk exists in NiceGUI when developers render unescaped user input into the DOM using ui.html. Before version 3.0, NiceGUI does not enforce HTML or JavaScript sanitization, so applications that directly combine components like ui.input with ui.html without...

PYSEC-2026-1461 Indico vulnerable to Cross-Site Scripting via LaTeX math code

Impact There is a Cross-Site-Scripting vulnerability when rendering LaTeX math code in contribution or abstract descriptions. Patches You should to update to Indico 3.3.8 as soon as possible. See the docs for instructions on how to update. Workarounds Only let trustworthy users create content on...

PYSEC-2026-1348 Fides' Admin UI User Password Change Does Not Invalidate Current Session

Summary Admin UI user password changes in Fides do not invalidate active user sessions, creating a vulnerability chaining opportunity where attackers who have obtained session tokens through other attack vectors such as XSS can maintain access even after password reset. This issue is not directly...

PYSEC-2026-1176 Apache Superset's chart visualization has a stored Cross-Site Scripting (XSS) vulnerability

A stored Cross-Site Scripting XSS vulnerability exists in Apache Superset's chart visualization. An authenticated user with permissions to edit charts can inject a malicious payload into a column's label. The payload is not properly sanitized and gets executed in the victim's browser when they...

PYSEC-2026-1087 Aim vulnerable to Cross-site Scripting

Cross-site Scripting XSS in aimhubio Aim 3.28.0 allows remote attackers to execute arbitrary JavaScript in victims browsers via malicious Python code submitted to the /api/reports endpoint, which is interpreted and executed by Pyodide when the report is viewed. No sanitisation or sandbox...

PYSEC-2026-1241 ChangeDetection.io XSS in watch overview

Impact XSS - Errors in filters from website page change detection watches were not being filtered. Patches 0.50.4...

PYSEC-2026-1675 Mobile Security Framework (MobSF) Allows Stored Cross Site Scripting (XSS) via malicious SVG Icon Upload

Vulnerable MobSF Versions: .svg This file becomes publicly accessible via the web interface at: http://127.0.0.1:8081/download/filename.svg If the SVG contains embedded JavaScript e.g., an XSS payload, accessing this URL via a browser leads to the execution of the script in the context of the Mob...

GO-2026-5900 SFTPGo has stored XSS via inline parameter on public shares and user file download in github.com/drakkan/sftpgo

SFTPGo has stored XSS via inline parameter on public shares and user file download in github.com/drakkan/sftpgo...