Important: Red Hat Security Advisory: curl security update

An update for curl 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 from the...

EulerOS 2.0 SP11 : curl (EulerOS-SA-2026-3063)

According to the versions of the curl packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : When asked to both use a .netrc file for credentials and to follow HTTP redirects, libcurl could leak the password used for the first host to the...

JLSEC-2026-1204 libcurl might in some circumstances reuse the wrong connection when asked to do an authenticated...

libcurl might in some circumstances reuse the wrong connection when asked to do an authenticated HTTPS request after a Negotiate-authenticated one, when both use the same host. libcurl features a pool of recent connections so that subsequent requests can reuse an existing connection to avoid...

EulerOS 2.0 SP13 : curl (EulerOS-SA-2026-2962)

According to the versions of the curl packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : libcurl might in some circumstances reuse the wrong connection when asked to do an authenticated HTTPS request after a Negotiate-authenticated one,...

GHSA-8PRM-248R-H957 Microsoft Security Advisory CVE-2026-47300 – .NET Elevation of Privilege Vulnerability

Executive summary Microsoft is releasing this security advisory to provide information about a vulnerability in ASP.NET Core Negotiate Authentication Microsoft.AspNetCore.Authentication.Negotiate. This advisory also provides guidance on what developers can do to update their applications to remov...

Microsoft Security Advisory CVE-2026-47300 – .NET Elevation of Privilege Vulnerability

Executive summary Microsoft is releasing this security advisory to provide information about a vulnerability in ASP.NET Core Negotiate Authentication Microsoft.AspNetCore.Authentication.Negotiate. This advisory also provides guidance on what developers can do to update their applications to remov...

GHSA-2P3Q-H3HG-JCQQ Microsoft Security Advisory CVE-2026-47303 – .NET Elevation of Privilege Vulnerability

Executive summary Microsoft is releasing this security advisory to provide information about a vulnerability in ASP.NET Core Negotiate Authentication Microsoft.AspNetCore.Authentication.Negotiate. This advisory also provides guidance on what developers can do to update their applications to remov...

Microsoft Security Advisory CVE-2026-47303 – .NET Elevation of Privilege Vulnerability

Executive summary Microsoft is releasing this security advisory to provide information about a vulnerability in ASP.NET Core Negotiate Authentication Microsoft.AspNetCore.Authentication.Negotiate. This advisory also provides guidance on what developers can do to update their applications to remov...

EulerOS Virtualization 2.10.1 : curl (EulerOS-SA-2026-2816)

According to the versions of the curl packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : libcurl might in some circumstances reuse the wrong connection for SMBS transfers.libcurl features a pool of recent connections so th...

EulerOS Virtualization 2.10.0 : curl (EulerOS-SA-2026-2847)

According to the versions of the curl packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : libcurl might in some circumstances reuse the wrong connection for SMBS transfers.libcurl features a pool of recent connections so th...

EulerOS 2.0 SP10 : curl (EulerOS-SA-2026-2644)

According to the versions of the curl packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : libcurl might in some circumstances reuse the wrong connection for SMBS transfers. libcurl features a pool of recent connections so that subsequent...

SUSE CVE-2026-8458

libcurl might in some circumstances reuse the wrong connection when asked to do Negotiate-authenticated ones, even when they are set to use different 'services'. libcurl features a pool of recent connections so that subsequent requests can reuse an existing connection to avoid overhead. When...

EulerOS 2.0 SP12 : curl (EulerOS-SA-2026-2583)

According to the versions of the curl packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : Using libcurl, when a custom Host: header is first set for an HTTP request and a second request is subsequently done using the same easy handle but...

ALPINE-CVE-2026-8458

libcurl might in some circumstances reuse the wrong connection when asked to do Negotiate-authenticated ones, even when they are set to use different 'services'. libcurl features a pool of recent connections so that subsequent requests can reuse an existing connection to avoid overhead. When...

CVE-2026-8458 wrong reuse for different services

libcurl might in some circumstances reuse the wrong connection when asked to do Negotiate-authenticated ones, even when they are set to use different 'services'. libcurl features a pool of recent connections so that subsequent requests can reuse an existing connection to avoid overhead. When...

EUVD-2026-41504

libcurl might in some circumstances reuse the wrong connection when asked to do Negotiate-authenticated ones, even when they are set to use different 'services'. libcurl features a pool of recent connections so that subsequent requests can reuse an existing connection to avoid overhead. When...

CVE-2026-8458 wrong reuse for different services

libcurl might in some circumstances reuse the wrong connection when asked to do Negotiate-authenticated ones, even when they are set to use different 'services'. libcurl features a pool of recent connections so that subsequent requests can reuse an existing connection to avoid overhead. When...

CVE-2026-8458

libcurl might in some circumstances reuse the wrong connection when asked to do Negotiate-authenticated ones, even when they are set to use different 'services'. libcurl features a pool of recent connections so that subsequent requests can reuse an existing connection to avoid overhead. When...

CVE-2026-8458

CVE-2026-8458 affects libcurl where, under Negotiate-authenticated requests, a logical error can cause a reused connection to be authenticated for a different service. This could allow a request to be served using credentials for another service, impacting integrity (high) and potentially exposin...

Security Bulletin: Multiple vulnerabilities impacts AIX due to cURL libcurl (CVE-2026-1965, CVE-2026-3783, CVE-2026-3784)

Summary Multiple vulnerabilities in the curl/libcurl are related to unauthorized access. Vulnerability Details CVEID:CVE-2026-1965 DESCRIPTION: libcurl can in some circumstances reuse the wrong connection when asked to do an Negotiate-authenticated HTTP or HTTPS request. libcurl features a pool o...