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

CVE-2026-44789

High
9.4/10

Summary

An authenticated user with permission to create or modify workflows could achieve global prototype pollution via an unvalidated pagination parameter in the HTTP Request node. Combined with other techniques this could lead to RCE on the instance. Affected versions are prior to 1.12.343, 2.x prior to 2.20.7 and 2.21.0 prior to 2.22.1.

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