CVE-2026-111358
SendPortal sendportal-core through 4.0.1 Cross-Workspace Tag Attachment via Subscriber Form
- State
- Published
- Severity
- 5.3 Medium
- Published
- Oct 15, 2026
- Updated
- Oct 16, 2026
- Reserved
- Oct 15, 2026
Description
SendPortal sendportal-core through 4.0.1 contains an authorization bypass vulnerability that allows authenticated workspace members to attach subscribers to other workspaces' tags by supplying unvalidated tag IDs. Attackers can submit sequential tag IDs via the web subscriber form or CSV import to receive victim campaign content and skew victim reports.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.3 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 5.4 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N | VulnCheck |
Weaknesses
- CWE-639 Authorization Bypass Through User-Controlled Key
Affected Products
| Product | Versions |
|---|---|
sendportal-coremettle |
|
References
- https://hackmd.io/@hieuPenguinnn/sendportal-subscriber-tags-cross-workspace-attachthird-party-advisory
- https://github.com/mettle/sendportal-core/blob/v4.0.1/src/Repositories/Subscribers/BaseSubscriberTenantRepository.php#L48-L51technical-description
- https://github.com/mettle/sendportal-core/blob/v4.0.1/src/Http/Requests/SubscriberRequest.php#L34-L37technical-description
- https://github.com/mettle/sendportal-coreproduct
- VulnCheck Advisory: SendPortal sendportal-core through 4.0.1 Cross-Workspace Tag Attachment via Subscriber Formthird-party-advisory
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