ownCloud — known exploited vulnerabilities
The CISA Known Exploited Vulnerabilities catalog (KEV) lists vulnerabilities that CISA has confirmed are being exploited in the wild; U.S. federal civilian agencies are required to remediate each entry by its due date. This page joins the KEV entries for ownCloud with NVD CVSS scores and CISA's ransomware-campaign flag. See our methodology or browse all CVEs.
Key findings
CISA's Known Exploited Vulnerabilities catalog lists 2 ownCloud vulnerabilities confirmed as exploited in the wild across 2 products; none are currently flagged as used in known ransomware campaigns. ownCloud and ownCloud graphapi are tied as the most-affected products, with 1 entry each (50% of the total each). CISA added 1 entry in 2026 so far, compared with 0 in 2025. Across the 2 entries with an NVD CVSS score (100% of the total), the average score is 9.9; 2 entries are rated critical by NVD. The most recent addition is CVE-2023-49105 (ownCloud Improper Authentication Vulnerability), added on 2026-08-27.
Affected products
| Product | Entries | Share |
|---|---|---|
| ownCloud | 1 | 50% |
| ownCloud graphapi | 1 | 50% |
Entries added per year
By date added to the KEV catalog
Exploited ownCloud vulnerabilities (2)
Newest first. CVSS scores from NVD where available.
| CVE | Product | Vulnerability | Date added | Ransomware | CVSS |
|---|---|---|---|---|---|
| CVE-2023-49105 | ownCloud | ownCloud Improper Authentication Vulnerability | 2026-08-27 | — | CRITICAL9.8 |
| CVE-2023-49103 | ownCloud graphapi | ownCloud graphapi Information Disclosure Vulnerability | 2023-11-30 | — | CRITICAL10.0 |
Source: CISA Known Exploited Vulnerabilities catalog, joined with NIST NVD CVSS data. Vendor names are normalized across spellings. Compare all vendors.