# CVE-2026-12730: Improper Validation of Certificate with Host Mismatch in IBM Business Automation Workflow containers

> Attackers can intercept traffic by exploiting improper certificate hostname validation, allowing connections to malicious servers.

- **Severity:** Low 3.8 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 5 Aug 2026
- **Updated:** 5 Aug 2026
- **Also known as:** GHSA-6486-8hjq-q8vf

## What is CVE-2026-12730?

CVE-2026-12730 is a low-severity vulnerability in Ibm Business Automation Workflow, published on 5 Aug 2026. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

IBM Business Automation Workflow containers and traditional 26.0.0, 25.0.0 through 25.0.0 Interim Fix 005, 24.0.1 through 24.0.1 Interim Fix 007, and 24.0.0 through 24.0.0 Interim Fix 009 IBM Business Automation Workflow fails to properly verify that the hostname matches the server certificate potentially allowing connections to an attacker-controlled server.

Weakness: CWE-297 (Improper Validation of Certificate with Host Mismatch)

## Which versions are affected by CVE-2026-12730?

It affects 1 product.


Products: Ibm Business Automation Workflow.

## How do I fix CVE-2026-12730?

No fix has been published for CVE-2026-12730 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-12730 being exploited?

There is no known exploitation of CVE-2026-12730 in the wild and no public exploit code.

## Other vulnerabilities in Ibm Business Automation Workflow

- [CVE-2022-43864](https://insights.sbomify.com/CVE-2022-43864/): IBM Business Automation Workflow information disclosure (high 7.5)
- [CVE-2025-13096](https://insights.sbomify.com/CVE-2025-13096/): XML eXternal Entity injection (XXE) vulnerability affect IBM Business Automation Workflow - (high 7.1)
- [CVE-2019-4424](https://insights.sbomify.com/CVE-2019-4424/): XML external entity in Business Automation Workflow (high 7.1)
- [CVE-2021-38893](https://insights.sbomify.com/CVE-2021-38893/): Cross-site scripting in Business Process Manager Standard (medium 6.4)
- [CVE-2021-29834](https://insights.sbomify.com/CVE-2021-29834/): Cross-site scripting in Business Automation Workflow (medium 6.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-12730 and fix it if it is affected.

What it is: CVE-2026-12730 is a low-severity vulnerability in Ibm Business Automation Workflow, published on 5 Aug 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-12730 in the wild and no public exploit code.

Affected product: Ibm Business Automation Workflow. 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-2026-12730/ (Markdown: https://insights.sbomify.com/CVE-2026-12730/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-12730
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-12730
- OSV: https://osv.dev/vulnerability/CVE-2026-12730

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-12730/
Summaries are generated and may contain mistakes; the official description above is the record.