3.5Low
CVE-2026-45159Nextcloud: Files drop share links for end-to-end encrypted folders allowed to drop files into other folders of the share owner
Description
Nextcloud is an open source content collaboration platform. From versions 1.15.0 to before 1.15.4, 1.16.0 to before 1.16.3, 1.17.0 to before 1.17.1, and 1.18.0 to before 1.18.1, a malicious user with access to an end-to-end encrypted files drop link was able to also drop files into other end-to-end encrypted folders of the share owner. Reading and modifying of other files was not possible. This issue has been patched in versions 1.15.4, 1.16.3, 1.17.1, 1.18.1, and 2.0.0-rc.7.
Weakness (CWE):
CWE-639
Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.
Affected products and versions
| Vendor | Product | Versions | |
|---|---|---|---|
| nextcloud | security-advisories | >= 1.15.0, < 1.15.4, >= 1.16.0, < 1.16.3, >= 1.17.0, < 1.17.1, >= 1.18.0, < 1.18.1 |