{"id":"CVE-2021-31922","aliases":["EUVD-2021-18795","GHSA-85qj-2cfq-3wp8"],"status":"published","title":"An HTTP Request Smuggling vulnerability in Pulse Secure Virtual Traffic Manager before 21.1 could...","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.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00973,"percentile":0.62314,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-335","CWE-444"],"published":"2021-05-14T00:41:27Z","modified":"2026-06-17T03:52:29Z","products":[{"vendor":"pulsesecure","product":"virtual_traffic_manager"}],"references":[{"url":"https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44790","tags":["x_refsource_MISC","x_transferred","Exploit","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-31922"},{"url":"https://github.com/advisories/GHSA-85qj-2cfq-3wp8"}],"sources":{"cve":[{"id":"CVE-2021-31922","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.","status":"published","published":"2021-05-14T00:41:27Z","modified":"2024-08-03T23:10:31.282Z","updated_at":"2026-11-02T14:33:05.331617Z"}],"euvd":[{"id":"EUVD-2021-18795","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.","status":"published","published":"2021-05-14T00:41:27Z","modified":"2024-08-03T23:10:31Z","updated_at":"2026-11-03T03:24:37.97373Z"}],"ghsa":[{"id":"GHSA-85qj-2cfq-3wp8","title":"An HTTP Request Smuggling vulnerability in Pulse Secure Virtual Traffic Manager before 21.1 could...","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.","status":"published","published":"2022-05-24T19:02:31Z","modified":"2023-01-27T05:03:02Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"cwes":["CWE-335"],"updated_at":"2026-11-02T14:42:09.625504Z"}],"nvd":[{"id":"CVE-2021-31922","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.","status":"published","published":"2021-05-14T01:15:06.937Z","modified":"2026-06-17T03:52:29.9Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-444"],"updated_at":"2026-11-02T14:06:53.343329Z"}]}}