CVE-2021-22905

Name: CVE-2021-22905
Creator: NVD / NIST
Published: 2021-06-11T16:15:11.597+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 1.37%

Last modified Jun 17, 2026

CVE-2021-22905 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. Nextcloud Android App (com.nextcloud.client) before v3.16.0 is vulnerable to information disclosure due to searches for sharees being performed by default on the lookup server instead of only using the local Nextcloud server unless a global search has been explicitly chosen by the user.. EPSS estimates a 1.37% chance of exploitation in the next 30 days.

Description

Nextcloud Android App (com.nextcloud.client) before v3.16.0 is vulnerable to information disclosure due to searches for sharees being performed by default on the lookup server instead of only using the local Nextcloud server unless a global search has been explicitly chosen by the user.

Metrics

CVSS 3.1

6.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

EPSS Probability

1.37%

68.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Nextcloud	Nextcloud	< 3.16.0

References

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-22v9-q3r6-x7cjThird Party Advisory
https://hackerone.com/reports/1167916Exploit, Issue Tracking, Third Party Advisory
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-22v9-q3r6-x7cjThird Party Advisory
https://hackerone.com/reports/1167916Exploit, Issue Tracking, Third Party Advisory

Timeline

Published: Jun 11, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-22905?

How severe is CVE-2021-22905?

CVE-2021-22905 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 1.37% probability of exploitation in the next 30 days.

How do I fix CVE-2021-22905?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-22905?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST