How severe is CVE-2026-1078?

CVE-2026-1078 has a CVSS 4.0 base score of 7.2, rated high severity.

Is CVE-2026-1078 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-1078?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-1078 have an EU (EUVD) identifier?

Yes. CVE-2026-1078 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-19638.

When was CVE-2026-1078 published?

CVE-2026-1078 was published on 2026-04-07 and last updated on 2026-06-17.

CVE-2026-1078

CVE-2026-1078 is a high-severity vulnerability with a CVSS 4.0 base score of 7.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-284.

Key facts

Severity: High (CVSS 4.0 base score 7.2)
EPSS exploit prediction: 0% (24th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-19638
Weakness: CWE-284
Published: 2026-04-07
Last modified: 2026-06-17

Description

An arbitrary file-write vulnerability in Pega Browser Extension (PBE) affects Pega Robotic Automation version 22.1 or R25 users who are running automations that work with Google Chrome or Microsoft Edge. A bad actor could create a website that includes malicious code. The vulnerability could occur if a Robot Runtime user navigates to the malicious website.

Frequently asked questions

What is CVE-2026-1078?: An arbitrary file-write vulnerability in Pega Browser Extension (PBE) affects Pega Robotic Automation version 22.1 or R25 users who are running automations that work with Google Chrome or Microsoft Edge. A bad actor could create a website that includes malicious code. The vulnerability could occur if a Robot Runtime user navigates to the malicious website.
How severe is CVE-2026-1078?: CVE-2026-1078 has a CVSS 4.0 base score of 7.2, rated high severity.
Is CVE-2026-1078 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-1078?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-1078 have an EU (EUVD) identifier?: Yes. CVE-2026-1078 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-19638.
When was CVE-2026-1078 published?: CVE-2026-1078 was published on 2026-04-07 and last updated on 2026-06-17.

References

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

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