Quick answers
- Is CVE-2026-45277 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-45277 being exploited in the wild.
- How severe is CVE-2026-45277?
- Low severity, with a CVSS score of 3.3, published 1 June 2026.
- Which products and versions are affected?
- Nextcloud Approval < 2.7.2.
- Is there a fix for CVE-2026-45277?
- A patch was published on 2026-01-08: Fix merged into main branch via pull request 356 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-45277 attacked?
- It is attacked with local access, in a network appliance.
- Am I affected by CVE-2026-45277?
- 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 information disclosure vulnerability exists in the Nextcloud Approval app prior to version 2.7.2. The application fails to properly validate file access permissions when a user requests workflow rules associated with a specific 'fileId'. An authenticated attacker can exploit this by providing arbitrary file identifiers to determine if those files are part of an approval process. This bypasses intended visibility restrictions regarding which files are subject to administrative or team approval workflows. The issue is addressed in version 2.7.2 by implementing stricter access permission checks during rule requests.
Affected products
- Nextcloud Approval app < 2.7.2
Timeline
- 2026-01-08: patched: Fix merged into main branch via pull request 356
- 2026-05-12: advisory: Vendor security advisory published via GitHub
- 2026-06-01: disclosed: CVE published to NVD