CentOS Linux 8 [TuxCare] Security Update: curl / curl-minimal / libcurl / libcurl-devel / libcurl-minimal Multiple Vulnerabilities (CENTOS-STREAM8:CLSA-2026:1774366368)

The CentOS Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare CENTOS-STREAM8:CLSA-2026:1774366368 advisory. - libcurl can in some circumstances reuse the wrong connection when asked to do an Negotiate-authenticated HTTP or HTTPS request...

AlmaLinux 9.6 [TuxCare] Security Update: curl / curl-minimal / libcurl / libcurl-devel / libcurl-minimal Multiple Vulnerabilities (ALMALINUX9.6:CLSA-2026:1785564870)

The AlmaLinux 9.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1785564870 advisory. - A vulnerability exists where a connection requiring TLS incorrectly reuses an existing unencrypted connection from the same...

AlmaLinux 9.2 [TuxCare] Security Update: curl / curl-minimal / libcurl / libcurl-devel / libcurl-minimal Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2024:1719943814)

The AlmaLinux 9.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.2:CLSA-2024:1719943814 advisory. - An authentication bypass vulnerability exists libcurl 8.0.0 in the connection reuse feature which can reuse previously established...

AlmaLinux 9.2 [TuxCare] Security Update: curl / curl-minimal / libcurl / libcurl-devel / libcurl-minimal Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2026:1776599416)

The AlmaLinux 9.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1776599416 advisory. - When saving HSTS data to an excessively long file name, curl could end up removing all contents, making subsequent requests using...

Rocky Linux 9.6 [TuxCare] Security Update: curl / curl-minimal / libcurl / libcurl-devel / libcurl-minimal Multiple Vulnerabilities (ALMALINUX9.6:CLSA-2026:1790152441)

The Rocky Linux 9.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1790152441 advisory. - A flaw in libcurl's handling of HTTP/2 Server Push streams, when the parent handle is set to share connections with other handle...

AlmaLinux 9.2 [TuxCare] Security Update: curl / curl-minimal / libcurl / libcurl-devel / libcurl-minimal Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2026:1785847606)

The AlmaLinux 9.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1785847606 advisory. - A vulnerability exists where a connection requiring TLS incorrectly reuses an existing unencrypted connection from the same...

AlmaLinux 9.2 [TuxCare] Security Update: curl / curl-minimal / libcurl / libcurl-devel / libcurl-minimal (ALMALINUX9.2:CLSA-2026:1771501223)

The AlmaLinux 9.2 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1771501223 advisory. - When doing SSH-based transfers using either SCP or SFTP, and setting the knownhosts file, libcurl could still mistakenly accept connecting ...

CentOS Linux 8.4 [TuxCare] Security Update: curl / curl-minimal / libcurl / libcurl-devel / libcurl-minimal (CENTOS8.4:CLSA-2025:1750784906)

The CentOS Linux 8.4 host has packages installed that are affected by a vulnerability as referenced in the TuxCare CENTOS8.4:CLSA-2025:1750784906 advisory. - libcurl's ASN1 parser code has the GTime2str function, used for parsing an ASN.1 Generalized Time field. If given an syntactically incorrec...

AlmaLinux 9.2 [TuxCare] Security Update: curl / curl-minimal / libcurl / libcurl-devel / libcurl-minimal (ALMALINUX9.2:CLSA-2026:1778890582)

The AlmaLinux 9.2 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1778890582 advisory. - libcurl might in some circumstances reuse the wrong connection when asked to do an authenticated HTTPS request after a...

CentOS Linux 8.5 [TuxCare] Security Update: curl / curl-minimal / libcurl / libcurl-devel / libcurl-minimal Multiple Vulnerabilities (CENTOS8.5:CLSA-2026:1783942033)

The CentOS Linux 8.5 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare CENTOS8.5:CLSA-2026:1783942033 advisory. - Successfully using libcurl to do a transfer to a specific HTTP origin hostA with Digest authentication and then changing the origi...

CentOS Linux 7 [TuxCare] Security Update: curl / libcurl / libcurl-devel (CENTOS7:CLSA-2026:1785773934)

The CentOS Linux 7 host has packages installed that are affected by a vulnerability as referenced in the TuxCare CENTOS7:CLSA-2026:1785773934 advisory. - 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...

AlmaLinux 9.6 [TuxCare] Security Update: curl / curl-minimal / libcurl / libcurl-devel / libcurl-minimal Multiple Vulnerabilities (ALMALINUX9.6:CLSA-2026:1779357790)

The AlmaLinux 9.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1779357790 advisory. - libcurl might in some circumstances reuse the wrong connection for SMBS transfers. libcurl features a pool of recent connections s...

CentOS Linux 7 [TuxCare] Security Update: curl / libcurl / libcurl-devel Multiple Vulnerabilities (CENTOS7:CLSA-2023:1697816385)

The CentOS Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare CENTOS7:CLSA-2023:1697816385 advisory. - libcurl would reuse a previously created connection even when a TLS or SSHrelated option had been changed that should have prohibited...

AlmaLinux 9.2 [TuxCare] Security Update: curl / curl-minimal / libcurl / libcurl-devel / libcurl-minimal Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2026:1786094315)

The AlmaLinux 9.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1786094315 advisory. - libcurl might in some circumstances reuse the wrong connection when asked to do Negotiate-authenticated ones, even when they are s...

CVE-2026-8932

🚨 CVE-2026-8932 - 最古のlibcurlセキュリティバグ libcurlにおける不完全なmTLS構成マッチング libcurlでこれまでに修正された最古のセキュリティ脆弱性——25年以上も気づかれずにいた。 📖 概要 CVE-2026-8932 は libcurl におけるセキュリティ脆弱性で、相互TLS（mTLS） クライアント認証設定が変更された後でも、ライブラリが誤って既存のTLS接続を再利用する可能性があります。 一部の秘密鍵関連オプション...

Amazon Linux 2023 : curl, curl-minimal, libcurl (ALAS2023-2026-3128)

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2026-3128 advisory. When CURLOPTPINNEDPUBLICKEY is configured alongside options that disable standard peer verification CURLOPTSSLVERIFYPEER = 0 and CURLOPTSSLVERIFYHOST = 0, libcurl fails to enforce public key pinning on...

RHEL 10 : curl (RHSA-2026:72506)

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:72506 advisory. The curl packages provide the libcurl library and the curl utility for downloading files from servers using various protocols, including...

SUSE CVE-2026-91766

When the http:// stream wrapper follows a redirect it forwards the user-supplied Authorization, Cookie and Proxy-Authorization headers unchanged, even when the redirect target is a different host, a different port, or a downgrade from HTTPS to HTTP. A server that can steer a redirect therefore...

libcurl: libcurl: Security feature bypass due to improper mTLS connection reuse

A flaw was found in curl. The libcurl library, used for transferring data with URLs, could improperly reuse existing network connections. This occurred even when changes to mutual Transport Layer Security mTLS settings, particularly those for client certificates, should have prevented such reuse...

curl: libcurl: Improper certificate validation due to cached TLS settings reuse

A flaw was found in libcurl. When handling secure connections TLS and reusing connection settings, libcurl could incorrectly apply a cached security setting related to certificate chain validation. This could allow libcurl to accept a server's security certificate that it should have otherwise...