CVE-2023-35173 json
End-to-End encrypted file-drops can be made inaccessible
published 2023-06-23 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-39177
- cvss
- 5.7
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 42%
- public exploits
- 0
- none known
Summary
Nextcloud End-to-end encryption app provides all the necessary APIs to implement End-to-End encryption on the client side. By providing an invalid meta data file, an attacker can make previously dropped files inaccessible. It is recommended that the Nextcloud End-to-end encryption app is upgraded to version 1.12.4 that contains the fix.
Patch / fix
Exploit prediction
0.49% chance of exploitation in the next 30 days, higher than 42% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.7 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H |
| NVD | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
Affected products
- nextcloud security-advisories
Classification
- Weakness
-
- CWE-284 Improper Access Control
References
-
github.com
/nextcloud/end_to_end_encryption/pull/435
patch
-
github.com
/nextcloud/security-advisories/security/advisories/GHSA-x7c7-v5r3-mg37
vendor-advisory
-
hackerone.com
/reports/1914115
third-party-advisory
Sources
- CVE List CVE-2023-35173
- NVD CVE-2023-35173
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