Quick answers
- Is CVE-2026-45275 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-45275 being exploited in the wild.
- How severe is CVE-2026-45275?
- Medium severity, with a CVSS score of 6.5, published 1 June 2026.
- Which products and versions are affected?
- Nextcloud Approval < 2.7.2.
- Is there a fix for CVE-2026-45275?
- A patch was published on 2026-03-16: Fix merged in GitHub pull request 392 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-45275 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-45275?
- Check whether you run Nextcloud Approval at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
An improper authorization vulnerability (CWE-285) exists in the Nextcloud Approval app prior to version 2.7.2. The flaw allows an authenticated user, even those explicitly restricted from sharing files, to trigger a workflow that forces the system to share files with designated approvers. This is achieved by exploiting the logic within the approval request mechanism. An attacker with low-level network access and valid credentials can gain unauthorized access to restricted files by becoming an 'approver' or forcing distribution to one. The issue is resolved in version 2.7.2; as a workaround, administrators can disable the Approval app.
Affected products
- Nextcloud Approval app < 2.7.2
Timeline
- 2026-03-16: patched: Fix merged in GitHub pull request 392
- 2026-05-12: advisory: GitHub Security Advisory GHSA-v8q8-w6c3-3gv9 published
- 2026-06-01: disclosed: CVE-2026-45275 published to NVD