CVE-2021-21993 json
The vCenter Server contains an SSRF (Server Side Request Forgery) vulnerability due to improper validation of URLs in vCenter Server Conten…
published 2021-09-23 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-9164
- cvss
- 6.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 61%
- public exploits
- 0
- none known
Summary
The vCenter Server contains an SSRF (Server Side Request Forgery) vulnerability due to improper validation of URLs in vCenter Server Content Library. An authorised user with access to content library may exploit this issue by sending a POST request to vCenter Server leading to information disclosure.
Patch / fix
Exploit prediction
0.94% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-08).
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:H/I:N/A:N |
| NVD | 2.0 | 4.0 | AV:N/AC:L/Au:S/C:P/I:N/A:N |
Affected products
- n/a VMware vCenter Server, VMware Cloud Foundation
Classification
- Weakness
-
- CWE-918 Server-Side Request Forgery
- Technology feeds
References
-
vmware.com
/security/advisories/VMSA-2021-0020.html
patch, vendor-advisory
Sources
- CVE List CVE-2021-21993
- NVD CVE-2021-21993
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