CVE-2023-35173: nextcloud end-to-end_encryption Improper Access Control
Vulnerability summary
CVE-2023-35173 is a medium (CVSS 6.5) Improper Access Control vulnerability in nextcloud end-to-end_encryption. EPSS estimates a 0.49% chance of exploitation in the next 30 days, higher than 41% of scored vulnerabilities.
Timeline
- 23-06-2023PublishedVulnerability first disclosed.
- 02-08-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
2 scores · 2 sources · 1 version- CVE.orgCNA5.7MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:HDiffers
EPSS trend
Probability
0.49%
Chance of exploitation in the next 30 days
Percentile
41%
Versus all other CVEs
30-day change
0.00 pp
From 0.49% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Nextcloud2 products
- end-to-end_encryption≥ 1.12.0, < 1.12.4
- security-advisories≥ 1.12.0, < 1.12.4
1 vendor · 2 products
References
3 links- github.com/nextcloud/security-advisories/security/advisories/GHSA-x7c7-v5r3-mg37X Refsource CONFIRMVendor Advisory