Newly released CVEs across every platform — sleek to read, verbose on demand, and served raw as markdown for AI and agent ingestion. Severity reads as depth: the deeper the contact, the graver the threat.
Depth = severity + exploitation
CVE-2026-45554Medium· 5.3NiceGUI: Unauthenticated log-volume denial of service in dynamic resource routes
CVE-2026-45553High· 7.5NiceGUI: Local file disclosure via Docutils file insertion in ui.restructured_text()
CVE-2026-39844Medium· 5.9NiceGUI: Upload filename sanitization bypass via backslashes allows path traversal on Windows
CVE-2026-33332Medium· 5.3NiceGUI's unvalidated chunk size parameter in media routes can cause memory exhaustion
CVE-2026-27156Medium· 6.1NiceGUI vulnerable to XSS via Code Injection during client-side element function execution
CVE-2026-25516Medium· 6.1NiceGUI's XSS vulnerability in ui.markdown() allows arbitrary JavaScript execution through unsanitized HTML content
CVE-2026-21874Medium· 5.3NiceGUI has Redis connection leak via tab storage causes service degradation
CVE-2026-21873High· 7.2NiceGUI apps which use `ui.sub_pages` vulnerable to zero-click XSS
CVE-2026-21872Medium· 6.1NiceGUI apps are vulnerable to XSS which uses `ui.sub_pages` and render arbitrary user-provided links
CVE-2026-21871Medium· 6.1NiceGUI is vulnerable to XSS via Unescaped URL in ui.navigate.history.push() / replace()
CVE-2025-66469Medium· 6.1NiceGUI Reflected XSS in ui.add_css, ui.add_scss, and ui.add_sass via Style Injection
CVE-2025-53354Medium· 6.1NiceGUI is a Python-based UI framework. Versions 2.24.2 and below are at risk for Cross-Site Scripting (XSS) when developers render unescaped user input into the DOM using ui.html(). NiceGUI did not enforce HTML or JavaScript sanitizatio…
CVE-2025-21618High· 7.5NiceGUI On Air authentication issue
CVE-2024-32005High· 8.2NiceGUI allows potential access to local file system
The beta is over. VulnSea now runs at vulnsea.com, every old beta link redirects to the same page, and your account, API keys and watchlists came with it. Plus a round of hardening, faster pages, and new request limits agents should know about.
A summary of everything that shipped over the last two weeks — the whole corpus is open, agents get change feeds, alias resolution and EPSS movers, and the data now includes CVE.org, vendor CSAF, aggregated exploits and per-source scores.
A step-by-step guide to plugging VulnSea into automated and agentic workflows — poll the delta, triage without burning tokens, match an SBOM, and let an MCP-native model do the reasoning.