What is CVE-2026-57076?

CVE-2026-57076 is a high-severity vulnerability in Toddr Yaml::syck, classified under Use After Free. CVSS score: 7.8/10. Published 2026-07-16.

How severe is CVE-2026-57076?

High severity. CVSS v3 base score is 7.8 out of 10.

Use After Free in Toddr Yaml::syck

CVE-2026-57076

YAML::Syck versions before 1.47 for Perl allow a heap use-after-free via an anchor name reused as an anchors-table key in syck_hdlr_add_anchor. In the bundled libsyck an anchor name allocated by syck_strndup is stored both as node->anchor…

Vulnerability class: Use-After-Free

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Toddr Yaml::syck — versions 0

Weakness classification (CWE)

CWE-416 — Use After Free

References

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

Frequently asked questions

What is CVE-2026-57076?: CVE-2026-57076 is a high-severity vulnerability in Toddr Yaml::syck, classified under Use After Free. CVSS score: 7.8/10. Published 2026-07-16.
How severe is CVE-2026-57076?: High severity. CVSS v3 base score is 7.8 out of 10.