# CVE-2026-15192: mettle sendportal APIv1 Webhooks mailjet missing authentication

> Attackers can access sendportal APIv1 Webhooks without authentication, bypassing security controls in the mailjet integration.

- **Severity:** Medium 6.9 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 9 Jul 2026
- **Updated:** 9 Jul 2026
- **Also known as:** GHSA-qcqf-phv4-c959

## What is CVE-2026-15192?

CVE-2026-15192 is a medium-severity missing authorization vulnerability in mettle sendportal, published on 9 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability has been found in mettle sendportal up to 3.0.1. This issue affects the function sendgrid/postmark/postal/mailjet of the component APIv1 Webhooks. The manipulation leads to missing authentication. The attack is possible to be carried out remotely. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Weakness: CWE-306 (Missing Authentication for Critical Functionality), CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2026-15192?


## How do I fix CVE-2026-15192?

No fix has been published for CVE-2026-15192 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-15192 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-15192 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-15192 and fix it if it is affected.

What it is: CVE-2026-15192 is a medium-severity missing authorization vulnerability in mettle sendportal, published on 9 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-15192 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-2026-15192/ (Markdown: https://insights.sbomify.com/CVE-2026-15192/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-15192
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-15192
- OSV: https://osv.dev/vulnerability/CVE-2026-15192

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-15192/
Summaries are generated and may contain mistakes; the official description above is the record.