What is CVE-2026-13713?

CVE-2026-13713 is a medium-severity vulnerability in Toddr Yaml::syck, classified under Double Free. CVSS score: 6.2/10. Published 2026-07-16.

How severe is CVE-2026-13713?

Medium severity. CVSS v3 base score is 6.2 out of 10.

Double Free in Toddr Yaml::syck

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. In the bundled libsyck, when an anchor name is redefined or removed, syck_hdlr_add_anchor and…

Vulnerability class: Double Free

CVSS v3 metric

CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Toddr Yaml::syck — versions 0

Weakness classification (CWE)

CWE-415 — Double Free
CWE-416 — Use After Free

References

9b29abf9-4ab0-4765-b253-1875cd9b441e (release-notes)
9b29abf9-4ab0-4765-b253-1875cd9b441e (patch)
af854a3a-2127-422b-91ae-364da2661108

Frequently asked questions

What is CVE-2026-13713?: CVE-2026-13713 is a medium-severity vulnerability in Toddr Yaml::syck, classified under Double Free. CVSS score: 6.2/10. Published 2026-07-16.
How severe is CVE-2026-13713?: Medium severity. CVSS v3 base score is 6.2 out of 10.