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SUSE Curl Moderate Connection Reuse Credential Leak Vuln 2026-2703-1

suse
Calendar Grey June 30, 2026
Dist Suse Esm H88
Install the latest SUSE security update for curl addressing six vulnerabilities and enhancing system security.
An update that solves six vulnerabilities can now be installed.

Summary

## 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

Topics%20covered

Topics Covered

security advisory moderate SuSE curl proxy credential leak

References

* bsc#1262631

* bsc#1262632

* bsc#1262633

* bsc#1262635

* bsc#1262636

* bsc#1262638

Cross-

* CVE-2026-4873

* CVE-2026-5545

* CVE-2026-5773

* CVE-2026-6253

* CVE-2026-6276

* CVE-2026-6429

CVSS scores:

* 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

Severity
moderate
Lowest
Low
Medium
High
Critical

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

Topics%20covered

Topics Covered

security advisory moderate SuSE curl proxy credential leak

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