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Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

CVE-2025-13465

Medium
6.9/10

Summary

Lodash versions from 4.0.0 through 4.17.22 are vulnerable to Prototype Pollution in the "_.unset" and "_.omit" functions. An attacker can pass crafted paths which cause Lodash to delete methods from global prototypes. The issue permits deletion of properties but does not allow overwriting their original behavior. This issue is patched in version 4.17.23.

  • LOW
  • NETWORK
  • NONE
  • NONE

CWE-1321 - Prototype Pollution

Prototype pollution is one of the lesser-known vulnerabilities. It allows attackers to abuse the rules of JavaScript by injecting properties into the general object “Object” in JS. Modifying the prototype of “Object” affects the behavior of all objects in the entire app, potentially resulting in denial of service, arbitrary code execution, cross-site scripting, etc.

References

Advisory Timeline

  • Published