fast-jwt accepts unknown `crit` header extensions (RFC 7515 violation)

Summary fast-jwt does not validate the crit Critical Header Parameter defined in RFC 7515 §4.1.11. When a JWS token contains a crit array listing extensions that fast-jwt does not understand, the library accepts the token instead of rejecting it. This violates the MUST requirement in the RFC. ---...

Auth0OAuthenticator has an Authentication Bypass via Unverified Email Claims

Summary An authentication bypass vulnerability in oauthenticator allows an attacker with an unverified email address on an Auth0 tenant to login to JupyterHub. When email is used as the usrnameclaim, this gives users control over their username and the possibility of account takeover. Impact This...

CVE-2026-34947

CVE-2026-34947 affects Discourse. Versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0 expose staged user custom fields and username on public invite pages without email verification. The issue has been patched in 2026.1.3, 2026.2...

CVE-2026-34947 Discourse: Staged user custom fields are exposed on public invite pages

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, staged user custom fields and username are exposed on public invite pages without email verification. This issue has been...

CVE-2026-34947

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, staged user custom fields and username are exposed on public invite pages without email verification. This issue has been...

CVE-2026-34947 Discourse: Staged user custom fields are exposed on public invite pages

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, staged user custom fields and username are exposed on public invite pages without email verification. This issue has been...

EUVD-2026-18882

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, staged user custom fields and username are exposed on public invite pages without email verification. This issue has been...

CVE-2026-34947 Discourse: Staged user custom fields are exposed on public invite pages

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, staged user custom fields and username are exposed on public invite pages without email verification. This issue has been...

CVE-2026-2625 Rust-rpm-sequoia: rust-rpm-sequoia: denial of service via crafted rpm file during signature verification

A flaw was found in rust-rpm-sequoia. An attacker can exploit this vulnerability by providing a specially crafted Red Hat Package Manager RPM file. During the RPM signature verification process, this crafted file can trigger an error in the OpenPGP signature parsing code, leading to an...

CVE-2026-2625

The CVE-2026-2625 flaw affects rust-rpm-sequoia. A crafted RPM file can trigger an error in the OpenPGP signature parsing code during verification, causing the rpm process to terminate unconditionally and leading to an application‑level DoS (unavailability to process RPMs for signature verificati...

CVE-2026-2625

A flaw was found in rust-rpm-sequoia. An attacker can exploit this vulnerability by providing a specially crafted Red Hat Package Manager RPM file. During the RPM signature verification process, this crafted file can trigger an error in the OpenPGP signature parsing code, leading to an...

CVE-2026-2625 Rust-rpm-sequoia: rust-rpm-sequoia: denial of service via crafted rpm file during signature verification

A flaw was found in rust-rpm-sequoia. An attacker can exploit this vulnerability by providing a specially crafted Red Hat Package Manager RPM file. During the RPM signature verification process, this crafted file can trigger an error in the OpenPGP signature parsing code, leading to an...

[SECURITY] Fedora 42 Update: bind9-next-9.21.20-1.fc42

BIND Berkeley Internet Name Domain is an implementation of the DNS Domain Name System protocols. BIND includes a DNS server named, which resolves host names to IP addresses; a resolver library routines for applications to use when interfacing with DNS; and tools for verifying that the DNS server ...

CVE-2026-26928

SzafirHost downloads necessary files in the context of the initiating web page. When called, SzafirHost updates its dynamic library. JAR files are correctly verified based on a list of trusted file hashes, and if a file was not on that list, it was checked to see if it had been digitally signed b...

CVE-2026-27124 FastMCP: Missing Consent Verification in OAuth Proxy Callback Facilitates Confused Deputy Vulnerabilities

FastMCP is the standard framework for building MCP applications. Prior to version 3.2.0, while testing the GitHubProvider OAuth integration, which allows authentication to a FastMCP MCP server via a FastMCP OAuthProxy using GitHub OAuth, it was discovered that the FastMCP OAuthProxy does not...

CVE-2026-27124 FastMCP: Missing Consent Verification in OAuth Proxy Callback Facilitates Confused Deputy Vulnerabilities

FastMCP is the standard framework for building MCP applications. Prior to version 3.2.0, while testing the GitHubProvider OAuth integration, which allows authentication to a FastMCP MCP server via a FastMCP OAuthProxy using GitHub OAuth, it was discovered that the FastMCP OAuthProxy does not...

CVE-2026-27124

CVE-2026-27124 describes a Confused Deputy vulnerability in the FastMCP OAuthProxy used with the GitHubProvider OAuth integration. Prior to version 3.2.0, the OAuthProxy does not properly validate user consent after receiving the GitHub authorization code, and combined with GitHub’s consent-page ...

Blocking children from social media is a badly executed good idea

While we can probably all agree that there is more than enough proof that social media is bad for the mental health of our children, the methods we are trying to block or ban them seem to do more harm than good. Across the world, lawmakers are tripping over each other to be seen “doing something”...

JLSEC-2026-30

A man-in-the-middle attacker can inject false responses to the client's first few queries, despite the use of SSL certificate verification and encryption...

JLSEC-2026-29

When the server is configured to use trust authentication with a clientcert requirement or to use cert authentication, a man-in-the-middle attacker can inject arbitrary SQL queries when a connection is first established, despite the use of SSL certificate verification and encryption...