Risk Letters

Exploited vulnerability

CVE-2022-1471

TLP:CLEAR

snakeyaml_project snakeyaml Improper Input Validation

SnakeYaml's Constructor() class does not restrict types which can be instantiated during deserialization. Deserializing yaml content provided by an attacker can lead to remote code execution. We recommend using SnakeYaml's SafeConsturctor when parsing untrusted content to restrict deserialization. We recommend upgrading to version 2.0 and beyond.

Facts

  • Vendor: snakeyaml_project
  • Product: snakeyaml
  • EPSS (probability of exploitation within 30 days): 99.5 %
  • First known exploitation: 26 October 2026
  • First seen by Risk Letters: 26 October 2026

Members see which Nordic sectors the flaw hits, and what to do about it.

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Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD