CVE-2026-33186

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...

CVE-2026-33186

Summary: CVE-2026-33186 affects gRPC-Go prior to 1.79.3, where Authorization bypass could occur due to improper input validation of the HTTP/2 :path header. The server accepted non-canonical paths like Service/Method (missing leading slash), causing canonical “deny” rules in path-based authorizat...

CVE-2026-33186

gRPC-Go is the Go language implementation of gRPC. Versions prior to 1.79.3 have an authorization bypass resulting from improper input validation of the HTTP/2 :path pseudo-header. The gRPC-Go server was too lenient in its routing logic, accepting requests where the :path omitted the mandatory...

ROS-20260319-73-0002

A vulnerability in the HTTP/2 protocol implementation is related to the ability to generate a stream of requests within an already established network connection, without opening new network connections and without acknowledging the receipt of packets. Exploitation of the vulnerability could allo...

netty: netty-codec-http2: Netty MadeYouReset HTTP/2 DDoS Vulnerability

A flaw was found in Netty where malformed client requests can trigger server-side stream resets without triggering abuse counters. This issue, referred to as the "MadeYouReset" attack, allows malicious clients to induce excessive server workload by repeatedly causing server-side stream aborts...

SUSE-SU-2026:20752-1 Security update for libsoup

This update for libsoup fixes the following issues: Update to libsoup 3.6.6: - CVE-2025-12105: heap use-after-free in message queue handling during HTTP/2 read completion bsc1252555. - CVE-2025-14523: Duplicate Host Header Handling Causes Host-Parsing Discrepancy bsc1254876. - CVE-2025-32049:...

Use After Free

Overview Affected versions of this package are vulnerable to Use After Free in the http/2 server implementation. An attacker can cause application instability or crashes by sending specially crafted HTTP/2 requests that trigger authentication failures, leading to access of freed memory. Note: Thi...

CVE-2026-4271

A flaw was found in libsoup, a library for handling HTTP requests. This vulnerability, known as a Use-After-Free, occurs in the HTTP/2 server implementation. A remote attacker can exploit this by sending specially crafted HTTP/2 requests that cause authentication failures. This can lead to the...

UBUNTU-CVE-2026-4271

A flaw was found in libsoup, a library for handling HTTP requests. This vulnerability, known as a Use-After-Free, occurs in the HTTP/2 server implementation. A remote attacker can exploit this by sending specially crafted HTTP/2 requests that cause authentication failures. This can lead to the...

CVE-2026-4271 Libsoup: libsoup: denial of service via use-after-free in http/2 server

A flaw was found in libsoup, a library for handling HTTP requests. This vulnerability, known as a Use-After-Free, occurs in the HTTP/2 server implementation. A remote attacker can exploit this by sending specially crafted HTTP/2 requests that cause authentication failures. This can lead to the...

CVE-2026-4271

A flaw was found in libsoup, a library for handling HTTP requests. This vulnerability, known as a Use-After-Free, occurs in the HTTP/2 server implementation. A remote attacker can exploit this by sending specially crafted HTTP/2 requests that cause authentication failures. This can lead to the...

CVE-2026-4271

A flaw was found in libsoup, a library for handling HTTP requests. This vulnerability, known as a Use-After-Free, occurs in the HTTP/2 server implementation. A remote attacker can exploit this by sending specially crafted HTTP/2 requests that cause authentication failures. This can lead to the...

openSUSE 16 Security Update : tomcat (openSUSE-SU-2026:20350-1)

The remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:20350-1 advisory. Update to Tomcat 9.0.115: - CVE-2025-66614: client certificate verification bypass due to virtual host mapping bsc1258371. - CVE-2026-24733:...

SUSE SLED15 / SLES15 Security Update : dnsdist (SUSE-SU-2026:0888-1)

The remote SUSE Linux SLED15 / SLEDSAP15 / SLES15 / SLESSAP15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:0888-1 advisory. Update to dnsdist 1.9.11: - CVE-2025-8671: Add mitigations for the HTTP/2 MadeYouReset attack bsc1253852. -...

SUSE-SU-2026:0888-1 Security update for dnsdist

This update for dnsdist fixes the following issues: Update to dnsdist 1.9.11: - CVE-2025-8671: Add mitigations for the HTTP/2 MadeYouReset attack bsc1253852. - CVE-2025-30187: denial of service via crafted DoH exchange bsc1250054...

GO-2026-4686 AdGuard Home: HTTP/2 Cleartext (h2c) Upgrade Authentication Bypass in github.com/AdguardTeam/AdGuardHome

AdGuard Home: HTTP/2 Cleartext h2c Upgrade Authentication Bypass in github.com/AdguardTeam/AdGuardHome...

AdGuard Home: HTTP/2 Cleartext (h2c) Upgrade Authentication Bypass

VULNERABILITY: HTTP/2 Cleartext h2c Upgrade Authentication Bypass ======================================================================== Severity: CRITICAL CVSS 3.1: 9.8 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CWE: CWE-287 Improper Authentication Component: internal/home/web.go Affected:...

AdGuard Home: HTTP/2 Cleartext (h2c) Upgrade Authentication Bypass

An unauthenticated remote attacker can bypass all authentication in AdGuardHome by sending an HTTP/1.1 request that requests an upgrade to HTTP/2 cleartext h2c. Once the upgrade is accepted, the resulting HTTP/2 connection is handled by the inner mux, which has no authentication middleware...

Denial Of Service (DoS)

Node.js is vulnerable to Denial of Service DoS. The vulnerability is due to improper handling of malformed HTTP/2 HEADERS frames containing invalid HPACK data, which can trigger an unhandled TLSSocket ECONNRESET error and cause the Node.js process to crash, enabling remote denial of service...

Debian dsa-6160 : libnetty-java - security update

The remote Debian 12 / 13 host has a package installed that is affected by multiple vulnerabilities as referenced in the dsa-6160 advisory. - ------------------------------------------------------------------------- Debian Security Advisory DSA-6160-1 [email protected]...