5.4 / 10

A missing link validation in Nextcloud Server before 20.0.2, 19.0.5, 18.0.11 allows execution of a stored XSS attack using Internet Explorer when saving a 'javascript:' URL in markdown format.

Weakness: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

The software does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Published: 2021-02-03

Community Advisory

This section is open source, for any additional information that enhances or clarifies the official advisory above.

Improve Advisory

CVE-2020-8294 Exploits

Exploits for CVE-2020-8294 are not publicly available.

Access our inventory of exclusive N-Day CVE Exploits, provided for legal security research and testing purposes. Inquire about our offerings by email: [email protected] (PGP key).

Bug Bounty

Nextcloud: Stored XSS in markdown file with Nextcloud Talk using Internet Explorer

submitted by verg 3 months ago
publicly disclosed 9 days ago

Official CVE References

View references (2)