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CVE-2026-27708

HIGH
7.1
CVSS 4.0
Description
FOSSBilling is a free, open-source billing and client management system. In versions 0.7.2 and prior, the Servicecustom Client API's __call method accepts an order_id parameter and fetches the associated order without verifying the authenticated client owns it, potentially exposing cross-client data through IDOR. An authenticated client can access any other client's custom service by guessing sequential order IDs. This can lead to a confidentiality breach — attackers can read client PII (name, email, phone, address, company details, VAT number) and service configuration data belonging to other clients. This issue has been fixed in version 0.8.0.

Metadata

CVE ID
CVE-2026-27708
State
PUBLISHED
Assigner
GitHub_M
Reserved
2026-02-23 17:56 UTC
Published
2026-06-24 19:24 UTC
Last updated
2026-06-24 19:24 UTC
Primary CWE
CWE-284
CWE-284: Improper Access Control
Vendor / Product
FOSSBilling / FOSSBilling
Sources
cve.org  ·  NVD

Severity & Metrics

7.1 HIGH CVSS 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Affected products (1)
VendorProductPlatformVersions
FOSSBilling FOSSBilling — < 0.8.0
Weakness (CWE)
CWESourceDescription
CWE-284 cna CWE-284: Improper Access Control
CWE-639 cna CWE-639: Authorization Bypass Through User-Controlled Key
CWE-862 cna CWE-862: Missing Authorization
CVSS scores (1)
ScoreSeverityVersionSourceVector
7.1 HIGH 4.0 cna CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
References (2)
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