VULNERABILITY INTELLIGENCE
CVE-2021-22878
CVSS score4.8 MEDIUM
EPSS probability1.06%
CISA KEVNot currently listed
Published2021-03-03
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
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`.
Weakness classification
- support@hackerone.com: CWE-79
- nvd@nist.gov: CWE-79
Primary references
- support@hackerone.com — Patch, Third Party Advisory
- support@hackerone.com — Exploit, Issue Tracking, Third Party Advisory
- support@hackerone.com
- support@hackerone.com — Vendor Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Patch, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Exploit, Issue Tracking, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108
- af854a3a-2127-422b-91ae-364da2661108 — Vendor Advisory