Security update for curl

Announcement ID: SUSE-SU-2026:21452-1
Release Date: 2026-04-30T14:47:08Z
Rating: important
References:
Cross-References:
CVSS scores:
  • CVE-2026-1965 ( SUSE ): 6.9 CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
  • CVE-2026-1965 ( SUSE ): 7.5 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
  • CVE-2026-1965 ( NVD ): 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
  • 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-2026-5545 ( 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-2026-6253 ( SUSE ): 8.2 CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
  • CVE-2026-6253 ( SUSE ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
  • CVE-2026-6276 ( 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-2026-6276 ( SUSE ): 3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
  • CVE-2026-6429 ( SUSE ): 8.2 CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
  • CVE-2026-6429 ( SUSE ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected Products:
  • SUSE Linux Micro 6.1

An update that solves six vulnerabilities can now be installed.

Description:

This update for curl fixes the following issues:

Security issues fixed:

  • 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).

Other updates and bugfixes:

  • sws: prevent "connection monitor" to say disconnect twice (bsc#1259362).

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 Micro 6.1
    zypper in -t patch SUSE-SLE-Micro-6.1-517=1

Package List:

  • SUSE Linux Micro 6.1 (aarch64 ppc64le s390x x86_64)
    • curl-8.14.1-slfo.1.1_7.1
    • libcurl4-8.14.1-slfo.1.1_7.1
    • curl-debugsource-8.14.1-slfo.1.1_7.1
    • libcurl4-debuginfo-8.14.1-slfo.1.1_7.1
    • curl-debuginfo-8.14.1-slfo.1.1_7.1

References: