Authorization Bypass in Mettle SendPortal by Mettle
CVE-2026-15191

5.3MEDIUM

Key Information:

Vendor

Mettle

Status
Sendportal
Vendor
CVE Published:
9 July 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-15191?

A vulnerability has been identified in Mettle SendPortal, specifically within the Campaign Creation Endpoint. This flaw allows an attacker to bypass authorization controls by manipulating the request handling mechanism in the CampaignStoreRequest.php file. The vulnerability is remotely exploitable, and reports indicate that it has been made public. Although the issue was reported to the developers, there has yet to be a response regarding a patch or a fix. Maintaining awareness and applying potential workarounds is advised to mitigate the risks associated with this vulnerability.

Affected Version(s)

sendportal 3.0.0

sendportal 3.0.1

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-15191 - Proof of Concept

References

https://vuldb.com/vuln/377117
vdb-entry
https://vuldb.com/vuln/377117/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-15191
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Superman_04 (VulDB User)
VulDB CNA Team
.