CVE-2018-20807

Name: CVE-2018-20807
Creator: NVD / NIST
Published: 2019-06-28T18:15:10.927+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.60%

Last modified Jun 17, 2026

CVE-2018-20807 is a vulnerability of currently unknown severity. An XSS issue has been found in welcome.cgi in Pulse Secure Pulse Connect Secure (PCS) 8.1.x before 8.1R12, 8.2.x before 8.2R9, and 8.3.x before 8.3R3 due to one of the URL parameters not being sanitized properly.. EPSS estimates a 1.60% chance of exploitation in the next 30 days.

Description

An XSS issue has been found in welcome.cgi in Pulse Secure Pulse Connect Secure (PCS) 8.1.x before 8.1R12, 8.2.x before 8.2R9, and 8.3.x before 8.3R3 due to one of the URL parameters not being sanitized properly.

Metrics

EPSS Probability

1.60%

72.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions	Update
Ivanti	Connect Secure	8.1	R1.0
Ivanti	Connect Secure	8.2	R1
Ivanti	Connect Secure	8.3	R1

References

https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA43730/Vendor Advisory
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA43730/Vendor Advisory

Timeline

Published: Jun 28, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-20807?

How severe is CVE-2018-20807?

Severity scoring for CVE-2018-20807 is pending analysis. The EPSS model estimates a 1.60% probability of exploitation in the next 30 days.

How do I fix CVE-2018-20807?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-20807?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST