{"cve":"CVE-2023-39957","nvd":{"published":"2023-08-10T16:15:09.797","modified":"2026-06-17T06:13:01.777","status":"Modified","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","score":7.8},"cwes":["CWE-22"],"references":["https://github.com/nextcloud/security-advisories/security/advisories/GHSA-36f7-93f3-mcfj","https://github.com/nextcloud/talk-android/pull/3064","https://hackerone.com/reports/1997029","https://github.com/nextcloud/security-advisories/security/advisories/GHSA-36f7-93f3-mcfj","https://github.com/nextcloud/talk-android/pull/3064"],"products":["nextcloud:talk"],"source":"nvd","synced_at":"2026-10-19T21:39:14.809778102+00:00"},"epss":{"cve":"CVE-2023-39957","score":0.00367,"percentile":0.30553,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}