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CVE-2021-32661

6.8 · MEDIUM

Backstage is an open platform for building developer portals.

Published Jun 3, 2021CWE-77EPSS 1.21%

Overview

CVE-2021-32661 is a medium-severity vulnerability. It was published on June 3, 2021 and has a CVSS 3.1 base score of 6.8 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.8, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

Backstage is an open platform for building developer portals. In versions of Backstage's Techdocs Plugin (`@backstage/plugin-techdocs`) prior to 0.9.5, a malicious internal actor can potentially upload documentation content with malicious scripts by embedding the script within an `object` element. This may give access to sensitive data when other users visit that same documentation page. The ability to upload malicious content may be limited by internal code review processes, unless the chosen TechDocs deployment method is to use an object store and the actor has access to upload files directly to that store. The vulnerability is patched in the `0.9.5` release of `@backstage/plugin-techdocs`.

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

GitHubgithub.com/backstage/backstage/commit/aad98c544e59369901fe9e0a85f6357644dceb5cGitHubgithub.com/backstage/backstage/releases/tag/release-2021-06-03GitHubgithub.com/backstage/backstage/security/advisories/GHSA-gg96-f8wr-p89fGitHubgithub.com/backstage/backstage/commit/aad98c544e59369901fe9e0a85f6357644dceb5cGitHubgithub.com/backstage/backstage/releases/tag/release-2021-06-03GitHubgithub.com/backstage/backstage/security/advisories/GHSA-gg96-f8wr-p89f

How CyberStrike helps

Frequently asked questions

What is CVE-2021-32661?

CVE-2021-32661 is a medium-severity vulnerability. It was published on June 3, 2021 and has a CVSS 3.1 base score of 6.8 (MEDIUM).

How severe is CVE-2021-32661?

This vulnerability has a CVSS 3.1 base score of 6.8, 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-2021-32661?

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-2021-32661?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-32661 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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