CVE-2021-36387

In Yellowfin before 9.6.1 there is a Stored Cross-Site Scripting vulnerability in the video embed...

5.4 Medium

In Yellowfin before 9.6.1 there is a Stored Cross-Site Scripting vulnerability in the video embed functionality exploitable through a specially crafted HTTP POST request to the page "ActivityStreamAjax.i4".

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: Low
User interaction: Required

What an attacker can affect

Confidentiality: Low
Integrity: Low
Availability: None

Exploit likelihood

1.48%Up 0.4 points since Oct 15, 2021

What each source reports

NVD Score used 5.4

Record: CVE-2021-36387
CVSS 3.1: 5.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CVSS 2.0: 3.5 LowAV:N/AC:M/Au:S/C:N/I:P/A:N
Weakness: CWE-79, CWE-639
Updated: 2026-11-02

CVE List 5.4

Record: CVE-2021-36387
CVSS 3.1: 5.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Weakness: CWE-639
Updated: 2026-11-02

EUVDEUVD-2021-23002 5.4

Record: EUVD-2021-23002
CVSS 3.1: 5.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Updated: 2026-11-03

GitHub AdvisoriesGHSA-7hr6-j3qm-7p23 5.4

In Yellowfin before 9.6.1 there is a Stored Cross-Site Scripting vulnerability in the video embed...

Record: GHSA-7hr6-j3qm-7p23
CVSS 3.1: 5.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Weakness: CWE-79, CWE-639
Updated: 2026-11-02

Affected products

yellowfinbi yellowfin

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-36387 is a medium vulnerability (CVSS 5.4) in Yellowfinbi Yellowfin, published October 14, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.48%, the 74th percentile. No source names a fixed version.