CVE-2021-45900 json
Vivoh Webinar Manager before 3.6.3.0 has improper API authentication.
published 2022-03-30 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-32615
- cvss
- 6.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 54%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- vivoh webinar_manager 3.6.3.0
Exploit prediction
0.74% chance of exploitation in the next 30 days, higher than 54% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- vivoh.com https://vivoh.com/blog/finra-remediation/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N |
| NVD | 2.0 | 4.0 | AV:N/AC:L/Au:S/C:N/I:P/A:N |
Classification
- Weakness
-
- CWE-287 Improper Authentication
References
-
vivoh.com
/blog/finra-remediation/
exploit, vendor-advisory
-
vivoh.com
/wp-content/uploads/2021/11/Vivoh-Webinar-Manager-for-Zoom-Installation-and-Administration-Guide.pdf
broken-link
Sources
- CVE List CVE-2021-45900
- NVD CVE-2021-45900
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