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SUSE Curl Moderate Credential Leak Fix SUSE-SU-2026-22156-1

suse
Calendar Grey June 23, 2026
Dist Suse Esm H88
Five vulnerabilities addressed in moderates security update for curl on SUSE. Install using recommended methods now.
An update that solves five 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-2026-6253: 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 16.0 zypper in -t patch SUSE-SLES-16.0-938=1 * SUSE Linux Enterprise Server for SAP applications 16.0

Topics%20covered

Topics Covered

security advisory moderate SuSE curl credential leak tls issue

References

* bsc#1262631

* bsc#1262632

* bsc#1262635

* bsc#1262636

* bsc#1262638

Cross-

* CVE-2026-4873

* CVE-2026-5545

* 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

* CVE-2026-6253 ( SUSE ): 8.2

Severity
moderate
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:22156-1
Release Date: 2026-06-17T08:47:34Z
Rating: moderate

Topics%20covered

Topics Covered

security advisory moderate SuSE curl credential leak tls issue

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