Vulnerability Details : CVE-2023-39961
Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 24.0.4 and prior to versions 25.0.9, 26.0.4, and 27.0.1, when a folder with images or an image was shared without download permissions, the user could add the image inline into a text file and download it. Nextcloud Server versions 25.0.9, 26.0.4, and 27.0.1 and Nextcloud Enterprise Server versions 24.0.12.5, 25.0.9, 26.0.4, and 27.0.1 contain a patch for this issue. No known workarounds are available.
Vulnerability category: BypassGain privilege
Products affected by CVE-2023-39961
- Nextcloud » Nextcloud Server » Enterprise EditionVersions from including (>=) 26.0.0 and before (<) 26.0.4cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*
- cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:-:*:*:*
- cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:-:*:*:*
- Nextcloud » Nextcloud Server » Enterprise EditionVersions from including (>=) 25.0.0 and before (<) 25.0.9cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*
- cpe:2.3:a:nextcloud:nextcloud_server:27.0.0:*:*:*:-:*:*:*
- cpe:2.3:a:nextcloud:nextcloud_server:27.0.0:*:*:*:enterprise:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2023-39961
0.25%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 49 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2023-39961
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
4.3
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N |
2.8
|
1.4
|
NIST | |
3.5
|
LOW | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N |
2.1
|
1.4
|
GitHub, Inc. |
CWE ids for CVE-2023-39961
-
The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.Assigned by: security-advisories@github.com (Primary)
References for CVE-2023-39961
-
https://github.com/nextcloud/text/pull/4481
fix: Fetch attachment share permissions by juliushaertl · Pull Request #4481 · nextcloud/text · GitHubPatch
-
https://hackerone.com/reports/1965156
Just a moment...Permissions Required
-
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-qhgm-w4gx-gvgp
Text does not respect "Allow download" permissions · Advisory · nextcloud/security-advisories · GitHubVendor Advisory
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