CVE-2021-22878

MEDIUM

Nextcloud Server < 20.0.6 - Reflected Cross-Site Scripting via OC.Notification.show

Title source: llm

Nextcloud Server prior to 20.0.6 is vulnerable to reflected cross-site scripting (XSS) due to lack of sanitization in `OC.Notification.show`.

Core 4

Core References

Exploit, Issue Tracking, Third Party Advisory x_refsource_misc

Vendor Advisory x_refsource_misc

Patch, Third Party Advisory x_refsource_misc

Mailing List, Third Party Advisory vendor-advisory x_refsource_fedora

CVSS v3 4.8

EPSS 0.0037

EPSS Percentile 58.9%

Attack Vector NETWORK

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

CWE

CWE-79

Status published

Products (2)

fedoraproject/fedora 34

nextcloud/nextcloud_server < 20.0.6

Published Mar 03, 2021

Tracked Since Feb 18, 2026