CVE-2023-48239: Nextcloud Server users can make external storage mount points inaccessible for other users
nextcloud · security-advisories
Affected: nextcloud security-advisories · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 61% of scored CVEs
DescriptionCVE.org
Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 25.0.0 and prior to versions 25.0.13, 26.0.8, and 27.1.3 of Nextcloud Server and starting in version 20.0.0 and prior to versions 20.0.14.16, 21.0.9.13, 22.2.10.15, 23.0.12.12, 24.0.12.8, 25.0.13, 26.0.8, and 27.1.3 of Nextcloud Enterprise Server, a malicious user could update any personal or global external storage, making them inaccessible for everyone else as well. Nextcloud Server 25.0.13, 26.0.8, and 27.1.3 and Nextcloud Enterprise Server is upgraded to 20.0.14.16, 21.0.9.13, 22.2.10.15, 23.0.12.12, 24.0.12.8, 25.0.13, 26.0.8, and 27.1.3 contain a patch for this issue. As a workaround, disable app files_external. This workaround also makes the external storage inaccessible but retains the configurations until a patched version has been deployed.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- nextcloud · security-advisories>= 25.0.0, < 25.0.13; >= 26.0.0, < 26.0.8; >= 27.0.0, < 27.1.3; >= 20.0.0, < 20.0.14.16; >= 21.0.0, < 21.0.9.13; >= 22.0.0, < 22.2.10.15 and 2 more
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- nextcloud
- Published
- November 2023
- Bounty reports
- 1 disclosed on HackerOne
Disclosed bug bounty reports about CVE-2023-48239
The reports on HackerOne that name this CVE, with HackerOne's own outcome. Titles and metadata only.
- Delete external storage of any userNextcloud · 2023 · high severityValid
CoverageNo articles yet
No CyberSIXT article names CVE-2023-48239 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.