Cross-client order association via unchecked ticket relation
Published Jun 23, 2026 · Updated Jun 23, 2026
IDOR in FOSSBilling 0.6.21 through 0.7.2 allows remote authenticated users to associate support tickets with another client's order. The ticketCreateForClient() method accepts rel_id when rel_type=order without confirming that the requesting client owns the order. Client authentication and staff action are required; the false relation can expose an order ID and mislead staff into acting on the wrong order.
Summary
What happened
IDOR in FOSSBilling 0.6.21 through 0.7.2 allows remote authenticated users to associate support tickets with another client's order. The ticketCreateForClient() method accepts rel_id when rel_type=order without confirming that the requesting client owns the order. Client authentication and staff action are required; the false relation can expose an order ID and mislead staff into acting on the wrong order.
The record
- CVE
- CVE-2025-64105
- Published
- Jun 23, 2026
- Updated
- Jun 23, 2026
- Vendor
- FOSSBilling
- Product
- FOSSBilling
- Classifications
- CWE-639, T1565.001
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 23, 2026CVE publishedPublication date reported by the CVE source.
- Jun 23, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=>= 0.6.21, < 0.8.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo