CVE-2021-32661 MEDIUM

CVE-2021-32661: TechDocs object element script injection

Vendor Backstage
Product backstage
Weakness CWE-77
Published June 3, 2021
Last update August 3, 2024

CVSS base score

6.8/10
Attack vector Network
Attack complexity Low
Privileges required High
User interaction Required
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

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`.

Key dates

02Disclosure timeline

June 3, 2021 CVE published
August 3, 2024 Record updated