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
Published Jul 16, 2026
·Updated
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 syckhdlraddanchor
Affected Software
1 affected component
Perl YAML::Syck<1.47
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Perl YAML::Syckto a version that resolves this vulnerability.Fixed in 1.47 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Patch CVE-2026-57076
Event History
Jul 16, 2026
CVE Published
via MITRE·09:40 PM
Data Sourced
via MITRE·09:40 PM
RemedyDescriptionWeakness
Data Sourced
via NVD·10:17 PM
DescriptionSeverityWeakness
Oct 21, 2026
Data Sourced
via Microsoft·08:01 AM
DescriptionSeverityWeakness
Frequently Asked Questions
1
What is the severity of CVE-2026-57076?
CVE-2026-57076 has a risk rating of 48.
2
How do I fix CVE-2026-57076?
To fix CVE-2026-57076, upgrade to YAML::Syck version 1.47 or later.
3
What systems are affected by CVE-2026-57076?
CVE-2026-57076 affects all versions of YAML::Syck for Perl prior to 1.47.
4
What type of vulnerability is CVE-2026-57076?
CVE-2026-57076 is categorized as a use-after-free vulnerability.
5
What impact does CVE-2026-57076 have?
CVE-2026-57076 could lead to security risks such as arbitrary code execution due to a heap use-after-free.