CVE-2021-26991

Name: CVE-2021-26991
Creator: NVD / NIST
Published: 2021-03-19T19:15:13.787+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.20%

Last modified Jun 17, 2026

CVE-2021-26991 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Cloud Manager versions prior to 3.9.4 contain an insecure Cross-Origin Resource Sharing (CORS) policy which could allow a remote attacker to interact with Cloud Manager.. EPSS estimates a 1.20% chance of exploitation in the next 30 days.

Description

Cloud Manager versions prior to 3.9.4 contain an insecure Cross-Origin Resource Sharing (CORS) policy which could allow a remote attacker to interact with Cloud Manager.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS Probability

1.20%

64.2th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Netapp	Cloud Manager	< 3.9.4

References

https://security.netapp.com/advisory/NTAP-20210318-0002Patch, Vendor Advisory
https://security.netapp.com/advisory/NTAP-20210318-0002Patch, Vendor Advisory

Timeline

Published: Mar 19, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-26991?

Cloud Manager versions prior to 3.9.4 contain an insecure Cross-Origin Resource Sharing (CORS) policy which could allow a remote attacker to interact with Cloud Manager.

How severe is CVE-2021-26991?

CVE-2021-26991 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.20% probability of exploitation in the next 30 days.

How do I fix CVE-2021-26991?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-26991?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST