CVE-2026-1079 PUBLISHED

A native messaging host vulnerability in Pega Browser Extension (PBE) affects users of all versions of Pega Robotic Automation who have installed Pega Browser Extension.

Assigner: Pega
Reserved: 16.01.2026 Published: 07.04.2026 Updated: 07.04.2026

A native messaging host vulnerability in Pega Browser Extension (PBE) affects users of all versions of Pega Robotic Automation who have installed Pega Browser Extension. A bad actor could create a website that contains malicious code that targets PBE. The vulnerability could occur if a user navigates to this website. The malicious website could then present an unexpected message box.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L
CVSS Score: 6

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	None
Attack Complexity	Low	Integrity	None	Integrity	None
Attack Requirements	Present	Availability	High	Availability	Low
Privileges Required	None
User Interaction	Passive

CVSS 4.0

Product Status

Vendor	Pegasystems
Product	Pega Browser Extension (PBE)
Versions	Default: unaffected affected from 0 to 3.1.45 (excl.)

Credits

Ramon Dunker from Achmea, Security Assessment Team finder

References

https://support.pega.com/support-doc/pega-security-advisory-a26-vulnerability-remediation-note

Problem Types

CWE-284: Improper Access Control CWE

Impacts

CAPEC-121: Exploit Process Communication