# CVE-2026-15191: mettle sendportal Campaign Creation Endpoint CampaignStoreRequest.php authorization

> Attackers can bypass authorization checks in the campaign creation endpoint to perform unauthorized actions, requiring immediate attention from sendportal users.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 9 Jul 2026
- **Updated:** 14 Jul 2026
- **Also known as:** GHSA-274r-rpm4-6m3r

## What is CVE-2026-15191?

CVE-2026-15191 is a medium-severity missing authorization vulnerability in mettle sendportal, published on 9 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A flaw has been found in mettle sendportal up to 3.0.1. This vulnerability affects unknown code of the file vendor/mettle/sendportal-core/src/Http/Requests/CampaignStoreRequest.php of the component Campaign Creation Endpoint. Executing a manipulation can lead to authorization bypass. The attack can be executed remotely. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Weakness: CWE-639 (Authorization Bypass Through User-Controlled Key), CWE-285 (Improper Authorization)

## Which versions are affected by CVE-2026-15191?


## How do I fix CVE-2026-15191?

No fix has been published for CVE-2026-15191 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-15191 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-15191 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-15191 and fix it if it is affected.

What it is: CVE-2026-15191 is a medium-severity missing authorization vulnerability in mettle sendportal, published on 9 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-15191 exists.

Affected product: mettle sendportal. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-15191/ (Markdown: https://insights.sbomify.com/CVE-2026-15191/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-15191
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-15191
- OSV: https://osv.dev/vulnerability/CVE-2026-15191

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-15191/
Summaries are generated and may contain mistakes; the official description above is the record.