Low severity · published Jun 1, 2026
CVE-2026-45277
Nextcloud: Information disclosure in Nextcloud Approval app via fileId parameter reveals workflow associations
3.3
CVSS
0.1%
EPSS
No
On KEV
Description
Nextcloud is an open source content collaboration platform. Prior to version 2.7.2, authenticated users can check if arbitrary files are associated with specific approval workflows where they can request approval. This issue has been patched in version 2.7.2.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 3% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SE
security-advisories · nextcloud
< 2.7.2 · source: vendor
AP
Approval · Nextcloud
before 2.7.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-45277
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-45277
Issue Tracking
https://github.com/nextcloud/approval/pull/356
Mitigation
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-h7gm-vgxr-9hcw
Permissions Required
https://hackerone.com/reports/3475210
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