CVE-2022-21826
mediumpriority · track · 38EPSS 0.460 · 99 %ileEUUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (3)
Products and version ranges known to be affected.
- pulsesecure pulse connect secure< 9.1nvdUScpe:2.3:a:pulsesecure:pulse_connect_secure:*:*:*:*:*:*:*:*
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (4)
External citations — patches, advisories, analysis.
- https://cxsecurity.com/cveshow/CVE-2022-21826/cnnvd
- https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/Client-Side-Desync-Attack/cnnvd
- https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/Client-Side-Desync-Attack/enisa_euvd
- https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/Client-Side-Desync-Attack/Vendor Advisorynvd
Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.
Free scan