Paper/Archive/CVE-2025-40908

CVE-2025-40908

TINITA YAML::LibYAML — YAML-LibYAML prior to 0.903.0 for Perl uses 2-args open, allowing existing files to be modified

EPSS 0.5%CVSS 9.1

critical.is priorityof 100

36

CVSS 9.1 (ADP)9.1 / 10 × 3027.3 Not in CISA KEV+300.0 EPSS percentile 40.8.408 × 208.2 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE record

YAML-LibYAML prior to 0.903.0 for Perl uses 2-args open, allowing existing files to be modified

Affected

ProductAffectedFixed inSource

YAML::LibYAML< 0.903.00.903.0CNA

Scores by source

CISA ADP9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refgithub.com/ingydotnet/yaml-libyaml-pm/issues/120 patchgithub.com/ingydotnet/yaml-libyaml-pm/pull/121 patchgithub.com/ingydotnet/yaml-libyaml-pm/pull/122