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Deserialization of Untrusted Data


Severity High
Score 9.8/10


** REJECTED ** This candidate was withdrawn by its CNA. Further investigation showed that it was not a security issue. All versions of the package "msgpack" are vulnerable to Deserialization of Untrusted Data via the unpack function. N.B: this affects the NPM package [msgpack]( only, NOT the more popular package [@msgpack/msgpack](

  • LOW
  • HIGH
  • NONE
  • NONE
  • HIGH
  • HIGH

CWE-502 - Deserialization of Untrusted Data

Deserialization of untrusted data vulnerabilities enable an attacker to replace or manipulate a serialized object, replacing it with malicious data. When the object is deserialized at the victim's end the malicious data is able to compromise the victim’s system. The exploit can be devastating, its impact may range from privilege escalation, broken access control, or denial of service attacks to allowing unauthorized access to the application's internal code and logic which can compromise the entire system.


Advisory Timeline

  • Published