Skip to content
OpenAdvisories
High RLSA-2026:6470 1 CVE

Important: perl-YAML-Syck security update

Published Apr 9, 2026 · Updated Apr 9, 2026

Ecosystem: Rocky Linux

Summary

This module provides a Perl interface to the libsyck data serialization library. It exports the Dump and Load functions for converting Perl data structures to YAML strings, and the other way around.

Security Fix(es):

* 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 (CVE-2026-4177)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Fixed packages 1

ReleasePackageFixed in
Rocky Linux · 8 perl-YAML-Syck 0:1.30-6.el8_10

Vulnerabilities 1

  • Critical 9.1
    CVE-2026-4177

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

    YAML::Syck versions through 1.36 for Perl has several potential security vulnerabilities including a high-severity heap buffer overflow in the YAML emitter. The heap overflow occurs when class names exceed the initial 512-byte allocation. The base64 decoder c…

    TODDR YAML::Syck libyaml-syck-perl perl-YAML-Syck Debian Ubuntu Azure Linux Alpine

References

  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2448277