Auth bypass in Nextcloud Server
CVE-2022-41970
Nextcloud Server is an open source personal cloud server. Prior to versions 24.0.7 and 25.0.1, disabled download shares still allow download through preview images. Images could be downloaded and previews of documents (first page) can be downloaded without being watermarked. Versions 24.0.7 and 25.0.1 contain a fix for this issue. No known workarounds are available.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 2.6 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.006 (47.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 47.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: +0.000
Affected products
- Nextcloud Server — versions 25.0.0
- Nextcloud Security-Advisories — versions < 24.0.7, >= 25.0.0, < 25.0.1
Weakness classification (CWE)
References
- github.com/nextcloud/security-advisories/security/advisories/GHSA-9mh6-cph8-772c (Third Party Advisory)
- github.com/nextcloud/server/pull/34788 (Patch, Third Party Advisory)
- hackerone.com/reports/1745766 (Permissions Required, Third Party Advisory)
Frequently asked questions
- What is CVE-2022-41970?
- CVE-2022-41970 is a low-severity vulnerability in Nextcloud Server, classified under Improper Access Control. CVSS score: 2.6/10. Published 2022-12-01.
- How severe is CVE-2022-41970?
- Low severity. CVSS v3 base score is 2.6 out of 10.