Missing authorization in WebPros WHMCS
Priority LOW 36CWE-862Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-862.
Summary
Missing authorization vulnerability has been discovered in 2Checkout payment gateway of WHMCS from 8.13.0 before 8.13.7, from 9.0.0 before 9.0.8, all other EOL versions from 4.5.0. The vulnerability allows an unauthenticated user to get WHMCS customer's data via 2Checkout payment gateway's endpoint under specific conditions.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00475 41st percentileScored 2026-11-07
Fix Fixed WHMCS (WebPros): 8.12.2, 8.13.7, 9.0.8
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| WebPros | WHMCS | 4.5.0 to before 8.12.2; 8.13.0 to before 8.13.7; 9.0.0 to before 9.0.8 | 8.12.2, 8.13.7, 9.0.8 | Patch available | CNA |
- WHMCS VendorWebPros Affected 4.5.0 to before 8.12.2; 8.13.0 to before 8.13.7; 9.0.0 to before 9.0.8 Fixed in 8.12.2, 8.13.7, 9.0.8 Patch available CNA
Remediation
- Fix · CNA WHMCS (WebPros) Fixed in 8.12.2, 8.13.7, 9.0.8
Timeline
- 2026-10-02 Threatist record created from CVE-2026-67398
- 2026-10-03 Alias added: GHSA-x84h-g4q5-82g8
References
More WebPros vulnerabilities
- TI-2026-30342 WebPros cPanel and WHM Authentication Bypass via Login Flow KEVCVSS 4.0CRITICAL 9.3
- TI-2026-46792 Eval injection in cPanel 11.138.0.0 and earlier allows remote authenticated users to execute arbitrary code as root. CVSS 4.0HIGH 8.7
- TI-2025-40383 Plesk Obsidian versions 8.0.1 through 18.0.73 are vulnerable to a Denial of Service (DoS)… CVSS 3.1HIGH 7.5
- TI-2026-23322 Incorrect privileges management and insufficient path filtering allow to read arbitrary… CVSS 3.1HIGH 8.6
- TI-2026-47685 Deserialization of untrusted data in WebPros WHMCS CVSS 4.0CRITICAL 9.3
- TI-2026-23317 Authorization bypass in WebPros Comet Backup CVSS 4.0CRITICAL 9.9
Sources
- CVE-2026-67398 · CVE Program
- CVE-2026-67398 · NVD
- FIRST EPSS
- GHSA-x84h-g4q5-82g8 · GitHub Advisory Database · CC BY 4.0
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