Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Collabora | Online | < 4.2.20 |
Related Weaknesses (CWE)
References
- https://github.com/CollaboraOnline/online/security/advisories/GHSA-7f6h-v9mx-58qThird Party Advisory
- https://github.com/CollaboraOnline/online/security/advisories/GHSA-7f6h-v9mx-58qThird Party Advisory
FAQ
What is CVE-2021-43817?
CVE-2021-43817 is a vulnerability with a CVSS score of 8.2 (HIGH). 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 unes...
How severe is CVE-2021-43817?
CVE-2021-43817 has been rated HIGH with a CVSS base score of 8.2/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-43817?
Check the references section above for vendor advisories and patch information. Affected products include: Collabora Online.