RHSA-2026:8311HighCVSS 7.3

Red Hat Security Advisory: perl-YAML-Syck security update

Published
April 15, 2026
Last Modified
November 2, 2026

🔗 CVE IDs covered (1)

CVE-2026-4177 →

📋 Description

CVE-2026-4177 — perl-YAML-Syck: YAML::Syck versions through 1.36 for Perl has several potential security vulnerabilities including a high-severity heap buffer overflow in the YAML emitter

🎯 Affected products10

  • Red Hat Enterprise Linux Server Optional (v. 7 ELS)
  • perl-YAML-Syck-0:1.27-3.el7_9.1.ppc64 as a component of Red Hat Enterprise Linux Server Optional (v. 7 ELS)
  • perl-YAML-Syck-0:1.27-3.el7_9.1.ppc64le as a component of Red Hat Enterprise Linux Server Optional (v. 7 ELS)
  • perl-YAML-Syck-0:1.27-3.el7_9.1.s390x as a component of Red Hat Enterprise Linux Server Optional (v. 7 ELS)
  • perl-YAML-Syck-0:1.27-3.el7_9.1.src as a component of Red Hat Enterprise Linux Server Optional (v. 7 ELS)
  • perl-YAML-Syck-0:1.27-3.el7_9.1.x86_64 as a component of Red Hat Enterprise Linux Server Optional (v. 7 ELS)
  • perl-YAML-Syck-debuginfo-0:1.27-3.el7_9.1.ppc64 as a component of Red Hat Enterprise Linux Server Optional (v. 7 ELS)
  • perl-YAML-Syck-debuginfo-0:1.27-3.el7_9.1.ppc64le as a component of Red Hat Enterprise Linux Server Optional (v. 7 ELS)
  • perl-YAML-Syck-debuginfo-0:1.27-3.el7_9.1.s390x as a component of Red Hat Enterprise Linux Server Optional (v. 7 ELS)
  • perl-YAML-Syck-debuginfo-0:1.27-3.el7_9.1.x86_64 as a component of Red Hat Enterprise Linux Server Optional (v. 7 ELS)

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Workaround: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

🔗 References (4)