Multiple format string vulnerabilities in the error reporting
functionality in the YAML::LibYAML (aka YAML-LibYAML and
perl-YAML-LibYAML) module 0.38 for Perl allow remote attackers to
cause a denial of service (process crash) via format string specifiers
in a (1) YAML stream to the Load function, (2) YAML node to the
load_node function, (3) YAML mapping to the load_mapping function, or
(4) YAML sequence to the load_sequence function.
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