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Description

Nextcloud is an open source content collaboration platform. In Nextcloud Server from versions 32.0.0 to before 32.0.9, and 33.0.0 to before 33.0.3, when a malicious user has access to a file share of a user, they could use this share token to also access the chunking upload directly and see temporary part files during on going uploads. It is recommended that the Nextcloud Server is upgraded to 32.0.9 or 33.0.3. It is recommended that the Nextcloud Enterprise Server is upgraded to 26.0.13.26, 27.1.11.25, 28.0.14.17, 29.0.16.16, 30.0.17.9, 31.0.14.5, 32.0.9 or 33.0.3

PUBLISHED Reserved 2026-05-08 | Published 2026-06-01 | Updated 2026-06-01 | Assigner GitHub_M




MEDIUM: 6.3CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N

Problem types

CWE-284: Improper Access Control

Product status

>= 32.0.0, < 32.0.9
affected

>= 33.0.0, < 33.0.3
affected

References

github.com/...sories/security/advisories/GHSA-45pj-p7x7-4mhc

github.com/nextcloud/server/pull/59780

hackerone.com/reports/3483708

cve.org (CVE-2026-45157)

nvd.nist.gov (CVE-2026-45157)

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