Cross-site Scripting (XSS)

Overview Affected versions of this package are vulnerable to Cross-site Scripting XSS via the asyncgetmediaimage function in the Shelly integration when processing the thumb field. An attacker can execute arbitrary HTML or JavaScript in the context of the Home Assistant web origin by supplying a...

CVE-2026-64823

Home Assistant Core before 2026.5.4 contains a cross-site scripting vulnerability in the Shelly integration's asyncgetmediaimage method that allows attackers controlling a Shelly device's thumb field to serve arbitrary HTML content by supplying a data URI with a text/html content type without...

CVE-2026-64823

CVE-2026-64823 affects Home Assistant Core prior to 2026.5.4 via the Shelly integration’s async_get_media_image(), where a data: URI with text/html can bypass the image-only allowlist. The vulnerability enables an attacker controlling a Shelly device’s thumb field to cause the media proxy endpoin...

CVE-2026-64823

Home Assistant Core before 2026.5.4 contains a cross-site scripting vulnerability in the Shelly integration's asyncgetmediaimage method that allows attackers controlling a Shelly device's thumb field to serve arbitrary HTML content by supplying a data URI with a text/html content type without...

CVE-2026-64823 Home Assistant Core < 2026.5.4 XSS via Shelly media_player.py thumb URI

Home Assistant Core before 2026.5.4 contains a cross-site scripting vulnerability in the Shelly integration's asyncgetmediaimage method that allows attackers controlling a Shelly device's thumb field to serve arbitrary HTML content by supplying a data URI with a text/html content type without...

CVE-2026-64823 Home Assistant Core < 2026.5.4 XSS via Shelly media_player.py thumb URI

Home Assistant Core before 2026.5.4 contains a cross-site scripting vulnerability in the Shelly integration's asyncgetmediaimage method that allows attackers controlling a Shelly device's thumb field to serve arbitrary HTML content by supplying a data URI with a text/html content type without...

CVE-2026-64823 Home Assistant Core < 2026.5.4 XSS via Shelly media_player.py thumb URI

Home Assistant Core before 2026.5.4 contains a cross-site scripting vulnerability in the Shelly integration's asyncgetmediaimage method that allows attackers controlling a Shelly device's thumb field to serve arbitrary HTML content by supplying a data URI with a text/html content type without...

CVE-2026-64823: Improper Neutralization of Input During Web Page Generation

Home Assistant Core before 2026.5.4 contains a cross-site scripting vulnerability in the Shelly integration's asyncgetmediaimage method that allows attackers controlling a Shelly device's thumb field to serve arbitrary HTML content by supplying a data URI with a text/html content type without...

PT-2026-61960

Home Assistant Core before 2026.5.4 contains a cross-site scripting vulnerability in the Shelly integration's async get media image method that allows attackers controlling a Shelly device's thumb field to serve arbitrary HTML content by supplying a data URI with a text/html content type without...

CVE-2026-56398 Open WebUI - Stored Cross-Site Scripting via OAuth Picture Claim SVG Data URI

Open WebUI before 0.9.5 contains a stored cross-site scripting vulnerability in the OAuth authentication flow where the picture claim URL MIME type is inferred from file extension rather than Content-Type header, allowing SVG files to bypass the profile image validator and be stored as data URIs...

CVE-2026-56398 Open WebUI - Stored Cross-Site Scripting via OAuth Picture Claim SVG Data URI

Open WebUI before 0.9.5 contains a stored cross-site scripting vulnerability in the OAuth authentication flow where the picture claim URL MIME type is inferred from file extension rather than Content-Type header, allowing SVG files to bypass the profile image validator and be stored as data URIs...

CVE-2026-56398 Open WebUI - Stored Cross-Site Scripting via OAuth Picture Claim SVG Data URI

Open WebUI before 0.9.5 contains a stored cross-site scripting vulnerability in the OAuth authentication flow where the picture claim URL MIME type is inferred from file extension rather than Content-Type header, allowing SVG files to bypass the profile image validator and be stored as data URIs...

EUVD-2026-44628

Open WebUI before 0.9.5 contains a stored cross-site scripting vulnerability in the OAuth authentication flow where the picture claim URL MIME type is inferred from file extension rather than Content-Type header, allowing SVG files to bypass the profile image validator and be stored as data URIs...

Open WebUI: Cross-user file disclosure via /api/chat/completions image_url field

summaryPOST /api/chat/completions accepts an imageurl.url value that, when it does NOT start with http://, https://, or data:image/, is interpreted as a file id and resolved against the global file table with no ownership check. An authenticated user can therefore set imageurl.url to another user...

Open WebUI has Stored Cross-Site Scripting In Profile Picture

SummaryThe profileimageurl field on the user profile update form accepted arbitrary data: URI values without MIME-type validation. Two distinct attack paths were independently demonstrated by separate reporters:1. data:text/html;base64,... in a new browser tab raresvis, 2025-04-17 — when a victim...

PYSEC-2026-2708 Open WebUI has Stored Cross-Site Scripting In Profile Picture

Summary The profileimageurl field on the user profile update form accepted arbitrary data: URI values without MIME-type validation. Two distinct attack paths were independently demonstrated by separate reporters: 1. data:text/html;base64,... in a new browser tab raresvis, 2025-04-17 — when a vict...

EUVD-2026-42964

ZITADEL is an open source identity management platform. Prior to 4.15.3, ZITADEL Login V2 OIDC and SAML FailedPrecondition error paths return loginSettings.defaultRedirectUri to router.push without applying the isSafeRedirectUri check, allowing an organization or instance administrator to store a...

CVE-2026-59802 PasswordPusher < 2.8.1 - Redirect-Based XSS via data URI in URL Push Payload

PasswordPusher before 2.8.1 accepts data URI schemes in URL push payloads due to insufficient validation in the validurl function. Attackers can create malicious pushes containing data:text/html URIs that execute arbitrary JavaScript in victims' browsers when clicked, enabling phishing and...

CVE-2026-59802 PasswordPusher < 2.8.1 - Redirect-Based XSS via data URI in URL Push Payload

PasswordPusher before 2.8.1 accepts data URI schemes in URL push payloads due to insufficient validation in the validurl function. Attackers can create malicious pushes containing data:text/html URIs that execute arbitrary JavaScript in victims' browsers when clicked, enabling phishing and...

CVE-2026-59802: Permissive List of Allowed Inputs

PasswordPusher before 2.8.1 accepts data URI schemes in URL push payloads due to insufficient validation in the validurl function. Attackers can create malicious pushes containing data:text/html URIs that execute arbitrary JavaScript in victims' browsers when clicked, enabling phishing and...