Medium severity · published Jun 28, 2019
CVE-2018-20807
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…
6.1
CVSS
1.6%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)1.6% · higher than 76% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CS
Connect Secure · Ivanti
8.1; 8.1; 8.1; 8.1; 8.1; 8.1; +33 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-20807
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-20807
Vendor Advisory
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA43730/
More from Connect Secure
10.0
CVE-2021-22893
Ivanti Pulse Connect Secure Use-After-Free Vulnerability
10.0
CVE-2019-11510
Ivanti Pulse Connect Secure Arbitrary File Read Vulnerability
9.8
CVE-2025-22457
Ivanti Connect Secure, Policy Secure, and ZTA Gateways Stack-Based Buffer Overflow Vulnerability
9.1
CVE-2024-21887
Ivanti Connect Secure and Policy Secure Command Injection Vulnerability
9.0
CVE-2025-0282
Ivanti Connect Secure, Policy Secure, and ZTA Gateways Stack-Based Buffer Overflow Vulnerability
