CVE-2019-25777 (GCVE-0-2019-25777)

Vulnerability from cvelistv5 – Published: 2026-10-05 06:50 – Updated: 2026-10-06 16:58
VLAI
Title
YAML versions before 1.27_001 for Perl allow a loaded perl/glob document to replace any package variable, which can lead to arbitrary code execution
Summary
YAML versions before 1.27_001 for Perl allow a loaded perl/glob document to replace any package variable, which can lead to arbitrary code execution. A perl/glob document names a package and a symbol, and supplies the value assigned to it. Nothing restricts the name, so the target can be @INC or YAML's own load options. A perl/glob document that sets $YAML::LoadCode or $YAML::UseCode turns on code loading, which is off by default, for every later Load() in the process. A perl/code document is then passed to a string eval, so an attacker who supplies two documents to separate Load() calls in one process can execute arbitrary Perl code.
Severity
7.3 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-06 16:58 UTC
CWE
  • CWE-914 - Improper Control of Dynamically-Identified Variables
  • CWE-502 - Deserialization of Untrusted Data
Assigner
CPANSec CNA under the redhat root
CNA scorecard C 63/100 over 298 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Affected: 0 , < 1.27_001 (custom)
Show details on NVD website
To clipboard 

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