CVEvulnerability

CVE-2023-26482

8.8 HIGH Published 2023-03-30 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2023-03-30
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
9.0 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
CVSS 3.1 ([email protected])
8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-78

Description

Nextcloud server is an open source home cloud implementation. In affected versions a missing scope validation allowed users to create workflows which are designed to be only available for administrators. Some workflows are designed to be RCE by invoking defined scripts, in order to generate PDFs, invoking webhooks or running scripts on the server. Due to this combination depending on the available apps the issue can result in a RCE at the end. It is recommended that the Nextcloud Server is upgraded to 24.0.10 or 25.0.4. Users unable to upgrade should disable app `workflow_scripts` and `workflow_pdf_converter` as a mitigation.

Affected configurations

• nextcloud nextcloud server (>= 18.0.0 < 20.0.14.12) • nextcloud nextcloud server (>= 21.0.0 < 21.0.9.10) • nextcloud nextcloud server (>= 22.0.0 < 22.2.10.10) • nextcloud nextcloud server (>= 23.0.0 < 23.0.12.5) • nextcloud nextcloud server (>= 24.0.0 < 24.0.10) • nextcloud nextcloud server (>= 25.0.0 < 25.0.4)

Related

Weakness · CWE (1)

  • CWE-78 Improper Neutralization of Special Elements used in an OS Command weakness

References