CVE-2021-22913

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-06-11 · updated 2026-06-17
Weakness: CWE-200

Description

Nextcloud Deck before 1.2.7, 1.4.1 suffers from an information disclosure vulnerability when searches for sharees utilize the lookup server by default instead of only the local Nextcloud server unless a global search has been explicitly chosen by the user.

Affected products

Nextcloud Deck: before 1.2.7; from 1.3.0 before 1.4.1 — fixed in 1.2.7, 1.4.1

How to fix

Upgrade to a fixed version: Nextcloud Deck 1.2.7, 1.4.1. Check the vendor advisory for mitigations.

References

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-h8f6-wg82-6p7r
https://hackerone.com/reports/1167958
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-h8f6-wg82-6p7r
https://hackerone.com/reports/1167958

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