TI-2021-05773 Aliases CVE-2021-22912

Information disclosure in Nextcloud iOS app

LOW 32CWE-200Published 2021-06-11 · Updated 2024-08-03

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Information disclosure
Confidentiality · integrity · availability: High · None · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-200.

Summary

Nextcloud iOS before 3.4.2 suffers from an information disclosure vulnerability when searches for sharees utilize the lookup server by default instead of only on the local Nextcloud server unless a global search has been explicitly chosen by the user.

Why it matters now

EPSS 0.01367 72nd percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	Nextcloud iOS app (it.twsweb.Nextcloud)	Fixed in 3.4.2	—	No fix listed	CNA

Nextcloud iOS app (it.twsweb.Nextcloud) Vendor— Affected Fixed in 3.4.2 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:nextcloud:nextcloud::::::iphone_os::*	before 3.4.2	Vulnerable	nextcloud

cpe:2.3:a:nextcloud:nextcloud:*:*:*:*:*:iphone_os:*:* Versions before 3.4.2 Vulnerable ·nextcloud

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2021-22912

References

Exploit 1

https://hackerone.com/reports/1167919

Advisory 1

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-m7w4-cvjr-76mh

TI-2022-11704 Sensitive files/data exist after deletion of user account in Nextcloud Android CVSS 3.1LOW 3.3
TI-2022-08695 Improper Authentication in Nextcloud Android Files CVSS 3.1LOW 2.4
TI-2019-03862 SQL injection in com.nextcloud.client CVSS 3.1CRITICAL 9.8
TI-2021-19669 SQL Injection in FileContentProvider (GHSL-2021-1007) CVSS 3.1HIGH 7.5
TI-2023-13460 Nextcloud: Lack of authenticity of metadata keys allows a malicious server to gain access to E2EE folders CVSS 3.1MEDIUM 6.9
TI-2021-12395 End-to-end encryption device setup did not verify public key CVSS 3.1HIGH 7.5

See all 27 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences