VULNERABILITY INTELLIGENCE

CVE-2023-26482

CVSS score9 CRITICAL
EPSS probability4.18%
CISA KEVNot currently listed
Published2023-03-30
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

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.

Weakness classification

  • security-advisories@github.com: CWE-78
  • nvd@nist.gov: NVD-CWE-noinfo

Primary references