CVE-2021-32660

    Dashboard / Vulnerabilities / CVE-2021-32660

    CVE-2021-32660

    Published: 3 Jun 2021Last Modified: 20 Oct 2026

    Summary:

    Details: Backstage is an open platform for building developer portals, and techdocs-common contains common functionalities for Backstage's TechDocs. In versions of `@backstage/tehdocs-common` prior to 0.6.4, a malicious internal actor is able to upload documentation content with malicious scripts. These scripts would normally be sanitized by the TechDocs frontend, but by tricking a user to visit the content via the TechDocs API, the content sanitazion will be bypassed. If the TechDocs API is hosted on the same origin as the Backstage app or other backend plugins, this may give access to sensitive data. 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 `0.6.4` release of `@backstage/techdocs-common`.

    References: https://github.com/backstage/backstage/security/advisories/GHSA-pwhf-39xg-4rxw, https://github.com/backstage/backstage/commit/aad98c544e59369901fe9e0a85f6357644dceb5c, https://github.com/backstage/backstage/releases/tag/release-2021-06-03

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -aad98c544e59369901fe9e0a85f6357644dceb5c

    Affected versions

    v0.28.0

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2021-32660 | CVE-DB