perl-YAML-Syck: This module provides a Perl interface to the libsyck data serialization library
CVE-2026-4177 is fixed in 5 products on 1 platform, first by DEBIAN-CVE-2026-4177, released March 16, 2026. It is not reported as exploited. Patch Radar priority: High.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| libyaml-syck-perl · Debian 12.15 (bookworm) | 1.34-2+deb12u2 | DSA-6175-1 | Mar 22, 2026 |
| libyaml-syck-perl · Debian 13.5 (trixie) | 1.34-2+deb13u2 | DSA-6175-1 | Mar 22, 2026 |
| libyaml-syck-perl · Debian 14 | 1.36-2 | DEBIAN-CVE-2026-4177 | Mar 16, 2026 |
| perl-YAML-Syck · RHEL 8 | 0:1.30-6.el8_10 | RHSA-2026:6470 | Apr 15, 2026 |
| perl-YAML-Syck · almalinux 8 | 1.30-6.el8_10 | ALSA-2026:6470 | Apr 2, 2026 |
| perl-YAML-Syck · amzn 2023 | 1.37-1.amzn2023.0.1 | ALAS2023-2026-1517 | Mar 30, 2026 |
| perl-YAML-Syck · ol 8 | 0:1.30-6.el8_10 | ELSA-2026-6470 | Apr 3, 2026 |
| perl-YAML-Syck · rocky 8 | 0:1.30-6.el8_10 | RLSA-2026:6470 | Apr 9, 2026 |
| perl-YAML-Syck-debuginfo · amzn 2023 | 1.37-1.amzn2023.0.1 | ALAS2023-2026-1517 | Mar 30, 2026 |
| perl-YAML-Syck-debugsource · amzn 2023 | 1.37-1.amzn2023.0.1 | ALAS2023-2026-1517 | Mar 30, 2026 |
| perl-YAML-Syck-tests · amzn 2023 | 1.37-1.amzn2023.0.1 | ALAS2023-2026-1517 | Mar 30, 2026 |
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