← All advisories

Medium severity4.8NVD Advisory· Published Mar 3, 2021· Updated Jun 17, 2026

CVE-2021-22878

CVE-2021-22878

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

5

Nextcloud/Server
cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*
Range: <20.0.6
Fedoraproject/Fedora
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
Nextcloud/Nextcloudllm-fuzzy2 versions
<20.0.6+ 1 more
- (no CPE)range: <20.0.6
- (no CPE)range: Fixed in 20.0.6
Nextcloud/Nextcloud Enterprise Serverllm-fuzzy
Range: <20.0.6

Patches

Vulnerability mechanics

References

4

github.com/nextcloud/server/pull/25234nvdPatchThird Party Advisory
hackerone.com/reports/896522nvdExploitIssue TrackingThird Party Advisory
nextcloud.com/security/advisory/nvdVendor Advisory
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L6BO6P6MP2MOWA6PZRXX32PLWPXN5O4S/nvd

News mentions

0

No linked articles in our index yet.