CVE-2021-39225: Nextcloud is an open-source, self-hosted productivity platform. A missing permission check in Nextcloud Deck before 1.2.9, 1.4.5 and 1.5.3 allows another…

PriorityP345high8.1CVSS 3.1

AVNACLPRLUINSUCHIHAN

EPSS

1.29%

66.7th percentile

Nextcloud is an open-source, self-hosted productivity platform. A missing permission check in Nextcloud Deck before 1.2.9, 1.4.5 and 1.5.3 allows another authenticated users to access Deck cards of another user. It is recommended that the Nextcloud Deck App is upgraded to 1.2.9, 1.4.5 or 1.5.3. There are no known workarounds aside from upgrading.

Affected

6 ranges

Vendor	Product	Version range	Fixed in
nextcloud	deck	< 1.2.9	1.2.9
nextcloud	deck	>= 1.3.0 < 1.4.5	1.4.5
nextcloud	deck	>= 1.5.0 < 1.5.3	1.5.3
nextcloud	security-advisories	< 1.2.9	1.2.9
nextcloud	security-advisories	—	—
nextcloud	security-advisories	—	—

CVSS provenance

nvdv3.18.1HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

nvdv2.05.5MEDIUMAV:N/AC:L/Au:S/C:P/I:P/A:N

Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.