Nextcloud iOS before 3.4.2 suffers from an information disclosure vulnerability when searches for sharees utilize the lookup server by defa…

published 2021-06-11 5 y ago modified 2026-09-08 2 mo ago also BIT-nextcloud-2021-22912 , EUVD-2021-10041 , GHSA-m7w4-cvjr-76mh

cvss: 6.5; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.4%; EPSS 1.4% chance of exploitation in 30 days, percentile 72%
public exploits: 0; none known

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.

Patch / fix

fixed in 2

bitnami nextcloud 3.4.2
nextcloud nextcloud 3.4.2

Exploit prediction

1.37% chance of exploitation in the next 30 days, higher than 72% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

hackerone.com https://hackerone.com/reports/1167919 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:P/I:N/A:N
OSV	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Affected packages

ecosystem	package	affected	fixed in
bitnami	nextcloud	<3.4.2	3.4.2

Affected products

n/a Nextcloud iOS app (it.twsweb.Nextcloud)

Classification

Weakness

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

hackerone.com /reports/1167919
exploit, issue-tracking, third-party-advisory, advisory
github.com /nextcloud/security-advisories/security/advisories/GHSA-m7w4-cvjr-76mh
third-party-advisory, advisory
nvd.nist.gov /vuln/detail/CVE-2021-22912
web

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary