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CVE-2021-27786

4.6 · MEDIUM

Cross-origin resource sharing (CORS) enables browsers to perform cross domain requests in a controlled manner.

Published Jun 9, 2022CWE-942EPSS 0.58%

Overview

CVE-2021-27786 is a medium-severity vulnerability. It was published on June 9, 2022 and has a CVSS 3.1 base score of 4.6 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 4.6, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

Cross-origin resource sharing (CORS) enables browsers to perform cross domain requests in a controlled manner. This request has an Origin header that identifies the domain that is making the initial request and defines the protocol between a browser and server to see if the request is allowed. An attacker can take advantage of this and possibly carry out privileged actions and access sensitive information when the Access-Control-Allow-Credentials is enabled.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refsupport.hcltechsw.com/csm?id=kb_article&sysparm_article=KB0098603Refsupport.hcltechsw.com/csm?id=kb_article&sysparm_article=KB0098603

How CyberStrike helps

Frequently asked questions

What is CVE-2021-27786?

CVE-2021-27786 is a medium-severity vulnerability. It was published on June 9, 2022 and has a CVSS 3.1 base score of 4.6 (MEDIUM).

How severe is CVE-2021-27786?

This vulnerability has a CVSS 3.1 base score of 4.6, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2021-27786?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2021-27786?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-27786 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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