CVE-2021-45900
Vivoh Webinar Manager before 3.6.3.0 has improper API authentication.
Does this matter?
Lower severity and a low EPSS score (0.74%). Track it; it rarely justifies an emergency change on its own.
Description
Vivoh Webinar Manager before 3.6.3.0 has improper API authentication. When a user logs in to the administration configuration web portlet, a VIVOH_AUTH cookie is assigned so that they can be uniquely identified. Certain APIs can be successfully executed without proper authentication. This can let an attacker impersonate as victim and make state changing requests on their behalf.
- CVSS 3.1
- 6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
- EPSS
- 0.74% probability · 54th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-287
- Affected
- vivoh/webinar manager
- Source
- cve@mitre.org
EPSS 0.7% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://vivoh.com/blog/finra-remediation/Exploit, Vendor Advisory
- https://vivoh.com/wp-content/uploads/2021/11/Vivoh-Webinar-Manager-for-Zoom-Installation-and-Administration-Guide.pdfBroken Link
- https://vivoh.com/blog/finra-remediation/Exploit, Vendor Advisory
- https://vivoh.com/wp-content/uploads/2021/11/Vivoh-Webinar-Manager-for-Zoom-Installation-and-Administration-Guide.pdfBroken Link
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.