CVE-2026-13713 YAML::Syck versions before 1.47 for Perl allow a use-after-free and double-free via an anchor node freed while still on the parser value stack

[
  {
    "collectionURL": "https://cpan.org/modules",
    "defaultStatus": "unaffected",
    "packageName": "YAML-Syck",
    "product": "YAML::Syck",
    "programFiles": [
      "handler.c",
      "syck_.c",
      "syck.h"
    ],
    "programRoutines": [
      {
        "name": "syck_hdlr_add_anchor"
      },
      {
        "name": "syck_hdlr_remove_anchor"
      },
      {
        "name": "syck_hdlr_add_node"
      }
    ],
    "repo": "https://github.com/toddr/YAML-Syck",
    "vendor": "TODDR",
    "versions": [
      {
        "lessThan": "1.47",
        "status": "affected",
        "version": "0",
        "versionType": "custom"
      }
    ]
  }
]