CVE-2023-35173

Name: CVE-2023-35173
Creator: NVD / NIST
Published: 2023-06-23T21:15:09.853+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.49%

Last modified Jun 17, 2026

CVE-2023-35173 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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. EPSS estimates a 0.49% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

6.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS Probability

0.49%

38.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-284

Affected Software

Vendor	Product	Versions
Nextcloud	End-To-End Encryption	>= 1.12.0, < 1.12.4

References

https://github.com/nextcloud/end_to_end_encryption/pull/435Patch
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-x7c7-v5r3-mg37Vendor Advisory
https://hackerone.com/reports/1914115Third Party Advisory
https://github.com/nextcloud/end_to_end_encryption/pull/435Patch
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-x7c7-v5r3-mg37Vendor Advisory
https://hackerone.com/reports/1914115Third Party Advisory

Timeline

Published: Jun 23, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-35173?

How severe is CVE-2023-35173?

CVE-2023-35173 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.49% probability of exploitation in the next 30 days.

How do I fix CVE-2023-35173?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-35173?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST