Vulnerability in Ivanti Connect Secure
CVE-2022-21826
Pulse Secure version 9.115 and below may be susceptible to client-side http request smuggling, When the application receives a POST request, it ignores the request's Content-Length header and leaves the POST body on the TCP/TLS socket. This body ends up prefixing the next HTTP request sent down that connection, this means when someone loads website attacker may be able to make browser issue a POST to the application, enabling XSS.
Vulnerability class: HTTP Request Smuggling
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.452 (98.7th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 99th percentile — 98.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.452 · newest: 0.452 · change: 0.000
Affected products
- Ivanti Connect Secure — versions 9.1
- Pulsesecure Pulse Connect Secure
- Pulse Connect Secure Vpn Server — versions 9.1R14 and below
Weakness classification (CWE)
Public proof-of-concept exploits
References
Frequently asked questions
- What is CVE-2022-21826?
- CVE-2022-21826 is a medium-severity vulnerability in Ivanti Connect Secure, classified under Inconsistent Interpretation of HTTP Requests (HTTP Request/Response Smuggling). CVSS score: 5.4/10. Published 2022-09-30.
- How severe is CVE-2022-21826?
- Medium severity. CVSS v3 base score is 5.4 out of 10.
- Is CVE-2022-21826 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.