Vulnerability · Published Dec 13, 2021 · Assigned by GitHub_M
CVE-2021-43817Reflected Cross-Site-Scripting vulnerability in Collabora Online
High 8.2
In plain English
A high-severity cross-site scripting in online from CollaboraOnline. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 52% of all known vulnerabilities).
Official description
Collabora Online is a collaborative online office suite based on LibreOffice technology. In affected versions a reflected XSS vulnerability was found in Collabora Online. An attacker could inject unescaped HTML into a variable as they created the Collabora Online iframe, and execute scripts inside the context of the Collabora Online iframe. This would give access to a small set of user settings stored in the browser, as well as the session's authentication token which was also passed in at iframe creation time. Users should upgrade to Collabora Online 6.4.16 or higher or Collabora Online 4.2.20 or higher. Collabora Online Development Edition 21.11 is not affected.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| CollaboraOnline | online | >= 6.0.0, < 6.4.16< 4.2.20 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N