CVE-2026-48954

CVE-2026-48954 affects Joomla! Core - Language Overrides. Root cause: improper validation allows a generic XSS in the language override feature. Impact per sources: high-severity issue (CVSS 4.0 base 8.4) with network access, requiring high privileges and passive user interaction; confidentiality...

EUVD-2026-42059

Improper validation leads to a generic XSS vector in the language override feature...

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...

OPENSUSE-SU-2026:21251-1 Security update for alloy

This update for alloy fixes the following issues: Update to version 1.17.0. Security issues fixed: - CVE-2026-25680: golang.org/x/net/html: parsing arbitrary HTML can consume excessive CPU time, possibly leading to denial of service bsc1267185. - CVE-2026-25681: golang.org/x/net/html: parsing...

GO-2026-5320 Cross-site Scripting (XSS) in github.com/yuin/goldmark

Cross-site Scripting XSS in github.com/yuin/goldmark...

GO-2026-5313 Hugo: XSS via text/html content files in github.com/gohugoio/hugo

Hugo: XSS via text/html content files in github.com/gohugoio/hugo...

GHSA-VJM7-M4XH-7WRC Open WebUI vulnerable to Stored XSS via iFrame embeds in response messages

Summary Manually modifying chat history allows setting the embeds property on a response message, the content of which is loaded into an iFrame with a sandbox that has allow-scripts and allow-same-origin set, ignoring the "iframe Sandbox Allow Same Origin" configuration. This enables stored XSS o...

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...

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...

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...

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...

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...

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...