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Fencer Vulns
medium 4.4

CVE-2023-28647 json

App pin of the iOS app can be bypassed in Nextcloud iOS

published 2023-03-30 3 y ago modified 2026-09-08 2 mo ago also BIT-nextcloud-2023-28647 , EUVD-2023-32308 , GHSA-wjgg-2v4p-2gq6

cvss
4.4
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 20%
public exploits
0
none known

Summary

Nextcloud iOS is an ios application used to interface with the nextcloud home cloud ecosystem. In versions prior to 4.7.0 when an attacker has physical access to an unlocked device, they may enable the integration into the iOS Files app and bypass the Nextcloud pin/password protection and gain access to a users files. It is recommended that the Nextcloud iOS app is upgraded to 4.7.0. There are no known workarounds for this vulnerability.

Patch / fix

  • bitnami nextcloud 4.7.0
  • nextcloud nextcloud 4.7.0

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
20 mo ago

Exploit prediction

0.28% chance of exploitation in the next 30 days, higher than 20% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 4.4 CVSS:3.1/AV:P/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:L
NVD 3.1 6.8 CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
OSV 3.1 6.8 CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
bitnami nextcloud
<4.7.0
4.7.0

Affected products

  • nextcloud security-advisories

Classification

Weakness
  • CWE-281 Improper Preservation of Permissions
  • CWE-287 Improper Authentication

References

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.