CVE-2026-45303 Open WebUI: Stored XSS via the HTML renedering view

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.6.5, through the HTML rendering view, scripts can be injected and executed. The frontend provides a function to visualize the HTML content of a current chat. The content is embedded in an...

Cross-site Scripting (XSS)

Overview Affected versions of this package are vulnerable to Cross-site Scripting XSS in the Display template option of the Set field type, where user-supplied input is processed by the $interpolate function and rendered via Vue's v-html directive without proper sanitization. An attacker can...

CVE-2026-46363

phpMyFAQ before 4.1.2 contains a stored cross-site scripting vulnerability in FAQ creation and update endpoints that bypass sanitization through encode-decode cycles. The vulnerability allows authenticated attackers with FAQADD permission to inject malicious script tags via question or answer...

AVideo: stored XSS via unescaped stream key in modeYoutubeLive.php class attribute

Summary Type: Stored cross-site scripting. The Live plugin's "YouTube-style" view renders the live transmission's stream key into an HTML class attribute by raw echo, without htmlspecialchars. A canStream user can persist a key containing " plus an event handler via plugin/Live/saveLive.php, and...

EUVD-2026-30556

Cockpit CMS through version 2.14.0, patched in commit 72a83fc, contains a stored cross-site scripting vulnerability in the Set field type's Display template option, where the template string is processed by the $interpolate function using new Function and rendered via Vue's v-html directive witho...

Open WebUI 跨站脚本漏洞

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted WebUI that is open source. Versions of Open WebUI prior to 0.9.3 had a cross-site scripting vulnerability. This vulnerability stemmed from the XLSX.utils.sheettohtml function, which was rendered using @html excelHtml without...

PT-2026-41365

Name of the Vulnerable Software and Affected Versions phpMyFAQ versions prior to 4.1.2 Description A stored cross-site scripting issue exists in the FAQ creation and update endpoints. Authenticated attackers with FAQ ADD permission can bypass sanitization through encode-decode cycles to inject...

PT-2026-41392

Name of the Vulnerable Software and Affected Versions Weblate versions prior to 2026.5 Description The live search preview renders the source and context variables as HTML without proper escaping. This allows a contributor to store HTML and CSS that executes within the authenticated editor of any...

Open WebUI 跨站脚本漏洞

Open WebUI is an open-source, scalable, feature-rich, and user-friendly self-hosted WebUI. Versions of Open WebUI prior to 0.6.5 had a cross-site scripting vulnerability. This vulnerability stemmed from HTML rendering views that allowed script injection and execution, potentially leading to...

NPM: Svelte: SSR XSS via Insecure Promise Serialization in hydratable

NPM: Svelte: SSR XSS via Insecure Promise Serialization in hydratable vulnerability discovered by ? in WordPress Npm svelte versions = 5.46.0, = 5.55.6...

Svelte: SSR XSS via Insecure Promise Serialization in hydratable

Contents of hydratable promises were not properly stringified, potentially leading to an XSS exploit. You are vulnerable if all of the following is true: - you are using hydratable an experimental feature at the time of this report - you are passing attacker-controlled input such that a synchrono...

GHSA-F3CJ-J4F6-WQ85 Svelte: SSR XSS via Insecure Promise Serialization in hydratable

Contents of hydratable promises were not properly stringified, potentially leading to an XSS exploit. You are vulnerable if all of the following is true: - you are using hydratable an experimental feature at the time of this report - you are passing attacker-controlled input such that a synchrono...

NPM: Svelte SSR vulnerable to cross-site scripting via spread attributes

NPM: Svelte SSR vulnerable to cross-site scripting via spread attributes vulnerability discovered by ? in WordPress Npm svelte versions = 5.55.6...

Svelte SSR vulnerable to cross-site scripting via spread attributes

When using spread syntax to render attributes from untrusted data, event handler properties are included in the rendered HTML output. If an application spreads user-controlled or external data as element attributes, an attacker can inject malicious event handlers that execute in victims' browsers...

GHSA-PR6F-5X2Q-RWFP Svelte SSR vulnerable to cross-site scripting via spread attributes

When using spread syntax to render attributes from untrusted data, event handler properties are included in the rendered HTML output. If an application spreads user-controlled or external data as element attributes, an attacker can inject malicious event handlers that execute in victims' browsers...

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 user-uploaded Office files as HTML using the Svelte @html directive without proper sanitization. An attacker can execute arbitrary JavaScript in the context of oth...

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...

GHSA-HCWP-82G6-8WXC 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...

Cross-site Scripting (XSS)

Overview open-webui is an Open WebUI Affected versions of this package are vulnerable to Cross-site Scripting XSS via the HTML rendering view. An attacker can execute arbitrary HTML or JavaScript in the user's context by injecting malicious scripts into embedded file in the chat that later shared...

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...