CVE-2023-39957 json
Path traversal allows tricking the Talk Android app into writing files into it's root directory
published 2023-08-10 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-43654
- cvss
- 7.2
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 30%
- public exploits
- 0
- none known
Summary
Nextcloud Talk Android allows users to place video and audio calls through Nextcloud on Android. Prior to version 17.0.0, an unprotected intend allowed malicious third party apps to trick the Talk Android app into writing files outside of its intended cache directory. Nextcloud Talk Android version 17.0.0 has a patch for this issue. No known workarounds are available.
Patch / fix
- nextcloud talk 17.0.0
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 2 y ago
Exploit prediction
0.37% chance of exploitation in the next 30 days, higher than 30% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 7.2 | CVSS:3.0/AV:L/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H |
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
Affected products
- nextcloud security-advisories
- nextcloud talk
Classification
- Weakness
-
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory
References
-
github.com
/nextcloud/talk-android/pull/3064
patch
-
github.com
/nextcloud/security-advisories/security/advisories/GHSA-36f7-93f3-mcfj
patch, vendor-advisory
-
hackerone.com
/reports/1997029
issue-tracking, third-party-advisory
Sources
- CVE List CVE-2023-39957
- NVD CVE-2023-39957
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