ownCloud Improper Authentication Vulnerability
ownCloud contains an improper authentication vulnerability that allows an attacker to access, modify, or delete any file without authentication if the username of a victim is known, and the victim has no signing-key configured.
ownCloudownCloud
Required actionApply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Evidence reason details
Eligible evidence is present for this bounded claim.
- Revision
evidence-policy-v1.1.0- Cutoff
- Resolution
- None
Eligible evidence is present for this bounded claim.
- Revision
evidence-policy-v1.1.0- Cutoff
- Resolution
- None
Eligible evidence is present for this bounded claim.
- Revision
casca-direct-cvss-eligibility-v1- Cutoff
- Resolution
- None
The source assertion is retained, but its canonical identity is unresolved.
- Revision
casca-factor-d-obligations-v1- Cutoff
- Resolution
- Resolve identity
- Added
- 2026-08-27
- Due
- 2026-08-30
- Priority interval
- 73.8–75.3
- Coverage
- 93%