What is CVE-2021-22936?

CVE-2021-22936 is a medium-severity vulnerability in Ivanti Connect Secure, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-08-16.

How severe is CVE-2021-22936?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Ivanti Connect Secure

CVE-2021-22936

A vulnerability in Pulse Connect Secure before 9.1R12 could allow a threat actor to perform a cross-site script attack against an authenticated administrator via an unsanitized web parameter.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2021-08-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.008 (56.5th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 56.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Ivanti Connect Secure — versions 9.1
Pulsesecure Pulse Connect Secure
Pulse Connect Secure — versions Fixed in 9.1R12

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44858/ (Vendor Advisory)

Frequently asked questions

What is CVE-2021-22936?: CVE-2021-22936 is a medium-severity vulnerability in Ivanti Connect Secure, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-08-16.
How severe is CVE-2021-22936?: Medium severity. CVSS v3 base score is 6.1 out of 10.