Vulnerability in Nextcloud Server
CVE-2023-45151
Nextcloud server is an open source home cloud platform. Affected versions of Nextcloud stored OAuth2 tokens in plaintext which allows an attacker who has gained access to the server to potentially elevate their privilege. This issue has been addressed and users are recommended to upgrade their Nextcloud Server to version 25.0.8, 26.0.3 or 27.0.1. There are no known workarounds for this vulnerability.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.005 (39.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 39.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Nextcloud Server — versions 27.0.0
- Nextcloud Security-Advisories — versions >= 25.0.0, < 25.0.8, >= 26.0.0, < 26.0.3, >= 27.0.0, < 27.0.1
Weakness classification (CWE)
References
- github.com/nextcloud/security-advisories/security/advisories/GHSA-hhgv-jcg9-p4m9 (Vendor Advisory)
- github.com/nextcloud/server/pull/38398 (Patch, Issue Tracking)
- hackerone.com/reports/1994324 (Permissions Required)
Frequently asked questions
- What is CVE-2023-45151?
- CVE-2023-45151 is a medium-severity vulnerability in Nextcloud Server, classified under Cleartext Storage of Sensitive Information. CVSS score: 6.5/10. Published 2023-10-16.
- How severe is CVE-2023-45151?
- Medium severity. CVSS v3 base score is 6.5 out of 10.