CVEvulnerability
CVE-2021-22878
4.8 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2021-03-03
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 4.8 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
- CVSS 2.0 ([email protected])
- 3.5 LOW — AV:N/AC:M/Au:S/C:N/I:P/A:N
- Weaknesses
- CWE-79
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`.
Affected configurations
• nextcloud nextcloud server (< 20.0.6)
• fedoraproject fedora 34
Related
Weakness · CWE (1)
- CWE-79 Improper Neutralization of Input During Web Page Generation weakness
References
- https://github.com/nextcloud/server/pull/25234 Patch, Third Party Advisory
- https://hackerone.com/reports/896522 Exploit, Issue Tracking, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L6BO6P6MP2MOWA6PZRXX32PLWPXN5O4S/ lists.fedoraproject.org
- https://nextcloud.com/security/advisory/?id=NC-SA-2021-005 Vendor Advisory
- https://github.com/nextcloud/server/pull/25234 Patch, Third Party Advisory
- https://hackerone.com/reports/896522 Exploit, Issue Tracking, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L6BO6P6MP2MOWA6PZRXX32PLWPXN5O4S/ lists.fedoraproject.org
- https://nextcloud.com/security/advisory/?id=NC-SA-2021-005 Vendor Advisory