CVE-2026-44727

Jupyter Server is the backend for Jupyter web applications. Prior to 2.20, 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...

CVE-2026-44727 Jupyter Server: Stored XSS in `NbconvertFileHandler` / `NbconvertPostHandler` via missing `sandbox` CSP

Jupyter Server is the backend for Jupyter web applications. Prior to 2.20, 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...

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...

Important: Red Hat Security Advisory: webkit2gtk3 security update

An update for webkit2gtk3 is now available for Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On. Red Hat Product Security has rated this update as having a security impact of Important. A Common...

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 a validation issue with improper logic...

Important: Red Hat Security Advisory: webkitgtk4 security update

An update for webkitgtk4 is now available for Red Hat Enterprise Linux 7 Extended Lifecycle Support. 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...

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...

google.golang.org/grpc/grpc-go: google.golang.org/grpc/authz: gRPC-Go: Authorization bypass due to improper HTTP/2 path validation

A flaw was found in gRPC-Go, the Go language implementation of gRPC. This vulnerability, an authorization bypass, is caused by improper input validation of the HTTP/2 :path pseudo-header. A remote attacker can exploit this by sending raw HTTP/2 frames with a malformed :path that omits the mandato...

RHEL 8 : webkit2gtk3 (RHSA-2026:27785)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:27785 advisory. WebKitGTK is the port of the portable web rendering engine WebKit to the GTK platform. Security Fixes: webkitgtk: Processing maliciously...

RHEL 8 : webkit2gtk3 (RHSA-2026:27804)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:27804 advisory. WebKitGTK is the port of the portable web rendering engine WebKit to the GTK platform. Security Fixes: webkitgtk: Processing maliciously...

Stored Cross-Site Scripting (XSS)

Jupyter Server is vulnerable to Stored Cross-Site Scripting XSS. The vulnerability is due to the nbconvert HTTP handlers rendering user-authored notebook HTML without a sandbox Content Security Policy CSP directive and the default non-sanitizing behavior of nbconvert.HTMLExporter, which allows an...

SUSE-SU-2026:22203-1 Security update for webkit2gtk3

This update for webkit2gtk3 fixes the following issues Update to version 2.52.4: - CVE-2026-28847: processing maliciously crafted web content may lead to an unexpected process crash or arbitrary code execution due to a heap buffer overflow bsc1267506. - CVE-2026-28883: processing maliciously...

OPENSUSE-SU-2026:21129-1 Security update for webkit2gtk3

This update for webkit2gtk3 fixes the following issues Update to version 2.52.4: - CVE-2026-28847: processing maliciously crafted web content may lead to an unexpected process crash or arbitrary code execution due to a heap buffer overflow bsc1267506. - CVE-2026-28883: processing maliciously...

CVE-2026-56212

Capgo before 12.128.2 contains an authentication logic flaw: a user with permission to manage team or organization security settings can enable mandatory two-factor authentication for all team members without first enabling 2FA on their own account. The application fails to verify the initiator's...

GHSA-R46F-3RPW-HXRV Hugo: security.http.urls deny rules bypassed by alternate IPv4 encodings (SSRF)

Impact The default security.http.urls policy denies requests to loopback, internal, and cloud-metadata IPv4 literals e.g. http://127.0.0.1/, http://169.254.169.254/. The deny rule only matched dotted-decimal notation, so alternate IPv4 encodings of the same addresses — integer, hex, or octal, whi...

NextJS-Middleware-Bypass-PoC

MCID15795619: Next.js Middleware Bypass PoC Executive Summ...

google.golang.org/grpc/grpc-go: google.golang.org/grpc/authz: gRPC-Go: Authorization bypass due to improper HTTP/2 path validation

A flaw was found in gRPC-Go, the Go language implementation of gRPC. This vulnerability, an authorization bypass, is caused by improper input validation of the HTTP/2 :path pseudo-header. A remote attacker can exploit this by sending raw HTTP/2 frames with a malformed :path that omits the mandato...