CVE-2026-6900 Improper Certificate Validation
Critical 9.1
Published
Updated
Check this codebase for CVE-2026-6900 and fix it if it is affected.
What it is: CVE-2026-6900 is a critical vulnerability in B&R Industrial Automation GmbH APROL, published on 6 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-6900 in the wild and no public exploit code.
Affected product: B&R Industrial Automation GmbH APROL. 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-2026-6900/ (Markdown: https://insights.sbomify.com/CVE-2026-6900/index.md)
Attackers can bypass certificate validation in B&R APROL, potentially enabling man-in-the-middle attacks against industrial automation systems.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-6900?
CVE-2026-6900 is a critical vulnerability in B&R Industrial Automation GmbH APROL, published on 6 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Improper certificate validation vulnerability in B&R Industrial Automation GmbH APROL.
This issue affects APROL: before R 4.4-01P5.
Weakness: CWE-295
Which versions are affected by CVE-2026-6900?
How do I fix CVE-2026-6900?
No fix has been published for CVE-2026-6900 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-6900 being exploited?
There is no known exploitation of CVE-2026-6900 in the wild and no public exploit code.
Sources
Also known as GHSA-4q88-82vm-7283.