CVE-2021-31922

Published: May 14, 2021Modified: Jun 17, 2026

7.5

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Exploitability: 3.9 / Impact: 3.6

Source: NVD

Description

An HTTP Request Smuggling vulnerability in Pulse Secure Virtual Traffic Manager before 21.1 could allow an attacker to smuggle an HTTP request through an HTTP/2 Header. This vulnerability is resolved in 21.1, 20.3R1, 20.2R1, 20.1R2, 19.2R4, and 18.2R3.

Affected (11)

Products: Pulsesecure: Virtual Traffic Manager

Pulsesecure

1 product

Virtual Traffic Manager

Configuration A

11 vulnerable

Vulnerable Software	Affected Versions
Pulsesecure Virtual Traffic Manager	Up to 18.1
Pulsesecure Virtual Traffic Manager	From 18.3 to 19.1
Pulsesecure Virtual Traffic Manager	Version 18.2
Pulsesecure Virtual Traffic Manager	Version 18.2 r1
Pulsesecure Virtual Traffic Manager	Version 19.2
Pulsesecure Virtual Traffic Manager	Version 19.2 r1
Pulsesecure Virtual Traffic Manager	Version 19.2 r2
Pulsesecure Virtual Traffic Manager	Version 19.3
Pulsesecure Virtual Traffic Manager	Version 20.1
Pulsesecure Virtual Traffic Manager	Version 20.2
Pulsesecure Virtual Traffic Manager	Version 20.3

Related CWEs

CWE-444

Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.

References (2)

https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44790

Source: cve@mitre.org

ExploitPatchVendor Advisory

https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44790

Source: af854a3a-2127-422b-91ae-364da2661108

ExploitPatchVendor Advisory

Timeline

No history available yet.