CVE-2026-111358: Authorization Bypass Through User-Controlled Key in mettle sendportal-core
Description
SendPortal sendportal-core versions up to 4.0.1 contain an authorization bypass vulnerability that allows authenticated workspace members to attach subscribers to tags belonging to other workspaces by supplying unvalidated tag IDs. This can lead to unauthorized access to victim campaign content and manipulation of victim reports.
CVSS v4.0
Score 5.3medium
Affected software
mettle
sendportal-core
pkg:github/sendportal-coreRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-111358 is an authorization bypass vulnerability in sendportal-core through version 4.0.1. Authenticated users with workspace membership can exploit the flaw by submitting unvalidated tag IDs, either sequentially via the web subscriber form or CSV import. This allows them to attach subscribers to tags from other workspaces, thereby accessing victim campaign content and skewing campaign reporting data.
Potential Impact
The vulnerability enables authenticated workspace members to bypass authorization controls and manipulate subscriber-tag associations across workspaces. This can result in unauthorized access to campaign content and inaccurate reporting metrics, potentially impacting data integrity and confidentiality within the SendPortal environment.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict workspace member permissions to limit tag management capabilities and monitor for unusual subscriber-tag associations.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-10-15T20:57:01.492Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ad14e332cdf04f656608514
Added to database: 10/15/2026, 22:05:39 UTC
Last enriched: 10/15/2026, 22:18:53 UTC
Last updated: 10/15/2026, 22:18:53 UTC
Views: 7
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