CVE-2026-1079Network attack vector

Unexpected message display via native host access

Published Apr 7, 2026 · Updated Apr 7, 2026

Improper access control in Pega Browser Extension before 3.1.45 allows remote attackers to trigger unexpected behavior via a malicious website. The native messaging host permits a targeted web page to invoke an operation that displays an unexpected message box, but Pega has not disclosed the specific handler or missing check. Exploitation requires an installed extension and user interaction with the malicious site; the published impact is limited to unexpected behavior.

CVSS severity6.0
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Pega Browser Extension before 3.1.45 allows remote attackers to trigger unexpected behavior via a malicious website. The native messaging host permits a targeted web page to invoke an operation that displays an unexpected message box, but Pega has not disclosed the specific handler or missing check. Exploitation requires an installed extension and user interaction with the malicious site; the published impact is limited to unexpected behavior.

The record

CVE
CVE-2026-1079
Published
Apr 7, 2026
Updated
Apr 7, 2026
Vendor
Pegasystems Inc.
Product
Pega Browser Extension (PBE)
Classifications
CWE-284, CAPEC-121, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 7, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 7, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <3.1.45

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Pegasystems Inc. · Pega Browser Extension (PBE)version=0 <3.1.45

Published CVSS scores

6.0Pegasystems Inc.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 describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
CAPEC-121Exploit Non-Production Interfaces
T1189Drive-by Compromise

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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