Jupyter Server: Stored XSS in `NbconvertFileHandler` / `NbconvertPostHandler` via missing `sandbox` CSP

The nbconvert HTTP handlers in jupyterserver render user-authored notebook HTML under the Jupyter origin without a sandbox directive in their Content-Security-Policy. Combined with nbconvert.HTMLExporter's default non-sanitizing behavior, a notebook carrying an HTML payload in a displaydata outpu...

EUVD-2026-37809

marimo before 0.23.9 contains a reflected cross-site scripting vulnerability in the notebook page that allows unauthenticated attackers to inject arbitrary JavaScript by exploiting improper escaping of single quotes in the file query parameter reflected into an inline JavaScript string literal...

webkit2gtk3 security update

An update is available for webkit2gtk3. This update affects Rocky Linux 9. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list WebKitGTK is the port of the portable web rendering engine WebKit to the...

RLSA-2026:25918 Important: webkit2gtk3 security update

WebKitGTK is the port of the portable web rendering engine WebKit to the GTK platform. Security Fixes: webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash CVE-2026-28946 webkitgtk: Processing maliciously crafted web content may lead to an unexpected proces...

webkit2gtk3 security update

An update is available for webkit2gtk3. This update affects Rocky Linux 8. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list WebKitGTK is the port of the portable web rendering engine WebKit to the...

PT-2026-50557

Name of the Vulnerable Software and Affected Versions marimo versions prior to 0.23.9 Description A reflected cross-site scripting issue exists in the notebook page. Unauthenticated attackers can inject arbitrary JavaScript by exploiting improper escaping of single quotes in the file query...

RockyLinux 8 : webkit2gtk3 (RLSA-2026:25918)

The remote RockyLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:25918 advisory. webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash CVE-2026-28946 webkitgtk: Processing maliciously crafted we...

n8n: Same-Origin XSS in Respond to Webhook Node

Impact An authenticated user with workflow edit access could configure a Respond to Webhook node to serve binary content with an attacker-controlled Content-Type. The binary response path bypassed the central Content-Security-Policy sandbox header, allowing a public webhook to execute JavaScript ...

GHSA-8RFP-98V4-MMR6 Bleach: URI sanitization allows disallowed URI schemes with Unicode > U+00A0 in output

Impact A possible XSS bypass affects users calling bleach.clean with all of: a in the allowed tags href in allowed attributes The bleach.clean sanitizer outputs URIs containing disallowed scheme patterns that it should be stripping. However, because the inserted Unicode characters make the scheme...

PT-2026-50167

Name of the Vulnerable Software and Affected Versions n8n versions prior to 1.123.55 n8n versions prior to 2.25.7 n8n versions prior to 2.26.2 Description An authenticated user with workflow edit access can configure a 'Respond to Webhook' node to serve binary content using an attacker-controlled...

PT-2026-50169

Name of the Vulnerable Software and Affected Versions n8n versions prior to 2.24.0 Description An endpoint in the Meta and Microsoft Teams trigger nodes reflects a query parameter into the HTTP response without sanitization or Content-Security-Policy headers. This allows for reflected Cross-Site...

AlmaLinux 9 : webkit2gtk3 (ALSA-2026:25927)

The remote AlmaLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:25927 advisory. webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash CVE-2026-28946 webkitgtk: Processing maliciously crafted web...

webkitgtk: Processing maliciously crafted web content may prevent Content Security Policy from being enforced

A flaw was found in WebKitGTK. Processing malicious web content may prevent Content Security Policy from being enforced due to a validation issue with improper logic...

Important: Red Hat Security Advisory: webkit2gtk3 security update

An update for webkit2gtk3 is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability fr...

webkitgtk: Processing maliciously crafted web content may prevent Content Security Policy from being enforced

A flaw was found in WebKitGTK. Processing malicious web content may prevent Content Security Policy from being enforced due to improper input validation...

webkitgtk: Processing maliciously crafted web content may prevent Content Security Policy from being enforced

A flaw was found in WebKitGTK. Processing malicious web content may prevent Content Security Policy from being enforced due to a validation issue with improper logic...

webkitgtk: Processing maliciously crafted web content may prevent Content Security Policy from being enforced

A flaw was found in WebKitGTK. Processing malicious web content may prevent Content Security Policy from being enforced due to improper input validation...

ALSA-2026:25918 Important: webkit2gtk3 security update

WebKitGTK is the port of the portable web rendering engine WebKit to the GTK platform. Security Fixes: webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash CVE-2026-28946 webkitgtk: Processing maliciously crafted web content may lead to an unexpected proces...

Important: webkit2gtk3 security update

WebKitGTK is the port of the portable web rendering engine WebKit to the GTK platform. Security Fixes: webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash CVE-2026-28946 webkitgtk: Processing maliciously crafted web content may lead to an unexpected proces...

Important: webkit2gtk3 security update

WebKitGTK is the port of the portable web rendering engine WebKit to the GTK platform. Security Fixes: webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash CVE-2026-28946 webkitgtk: Processing maliciously crafted web content may lead to an unexpected proces...