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SUSE Curl Moderate Connection Reuse Credential Leak Vuln 2026-2703

SUSE Curl Moderate Connection Reuse Credential Leak Vuln 2026-2703

Linuxsecurity •LinuxSecurity Advisories • June 30, 2026

## This update for curl fixes the following issues * CVE-2026-4873: connection reuse ignores TLS requirement (bsc#1262631). * CVE-2026-5545: wrong reuse of HTTP Negotiate connection (bsc#1262632). * CVE-2026-5773: wrong reuse of SMB connection (bsc#1262633). * CVE-2026-6253: proxy credentials leak over redirect-to proxy (bsc#1262635). * CVE-2026-6276: stale custom cookie host causes cookie leak (bsc#1262636). * CVE-2026-6429: netrc credential leak with reused proxy connection (bsc#1262638). ## Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch". Alternatively you can run the command listed for your product: * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security

## This update for curl fixes the following issues * CVE-2026-4873: connection reuse ignores TLS requirement (bsc#1262631). * CVE-2026-5545: wrong reuse of HTTP Negotiate connection (bsc#1262632). * CVE-2026-5773: wrong reuse of SMB connection (bsc#1262633). * CVE-2026-6253: proxy credentials leak over redirect-to proxy (bsc#1262635). * CVE-2026-6276: stale custom cookie host causes cookie leak (bsc#1262636). * CVE-2026-6429: netrc credential leak with reused proxy connection (bsc#1262638). ## Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch". Alternatively you can run the command listed for your product: * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security

* CVE-2026-4873 ( SUSE ): 6.3

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

* CVE-2026-4873 ( SUSE ): 3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

* CVE-2026-4873 ( NVD ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

* CVE-2026-5545 ( SUSE ): 8.3

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N

* CVE-2026-5545 ( SUSE ): 6.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N

* CVE-2026-5545 ( NVD ): 6.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N

* CVE-2026-5545 ( NVD ): 6.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N

Announcement ID: SUSE-SU-2026:2703-1 Release Date: 2026-06-30T10:27:51Z Rating: moderate

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