CVE-2021-43863 json
SQL Injection in FileContentProvider (GHSL-2021-1007)
published 4y ago modified 2mo ago also BIT-nextcloud-2021-43863 , EUVD-2021-30725 , GHSA-vjp2-f63v-w479
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.9%
- EPSS 1.9% chance of exploitation in 30 days, percentile 79%
- public exploits
- 0
- none known
Summary
The Nextcloud Android app is the Android client for Nextcloud, a self-hosted productivity platform. The Nextcloud Android app uses content providers to manage its data. Prior to version 3.18.1, the providers `FileContentProvider` and `DiskLruImageCacheFileProvider` have security issues (an SQL injection, and an insufficient permission control, respectively) that allow malicious apps in the same device to access Nextcloud's data bypassing the permission control system. Users should upgrade to version 3.18.1 to receive a patch. There are no known workarounds aside from upgrading.
Patch / fix
Is CVE-2021-43863 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- last yr.
Exploit prediction
1.87% chance of exploitation in the next 30 days, higher than 79% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
| OSV | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| bitnami | nextcloud | <3.18.1 |
3.18.1 |
Affected products
- nextcloud android
Classification
- Weakness
-
- CWE-89 Improper Neutralization of Special Elements used in an SQL Command
References
-
github.com
/nextcloud/android/commit/627caba60e69e223b0fc89c4cb18eaa76a95db95
patch, third-party-advisory, advisory
-
github.com
/nextcloud/android/security/advisories/GHSA-vjp2-f63v-w479
third-party-advisory, advisory
-
hackerone.com
/reports/1358597
permissions-required, web
-
nvd.nist.gov
/vuln/detail/CVE-2021-43863
web
Sources
- CVE List CVE-2021-43863
- NVD CVE-2021-43863
- OSV BIT-nextcloud-2021-43863
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