CVE-2021-22878

PoC —

CVSS 3.1

4.8 medium

EPSS

1%p63

Published

Mar 3, 2021 (Mar 3, 2021)

Modified

Jun 17, 2026

Description

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

Vendors: nextcloud fedoraproject
Products: nextcloud server, fedora
Weakness: CWE-79
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

NVD CVE.org GitHub PoCs EPSS (1.1%)

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