CVE-2026-18151 IBM i is Affected By Multiple Vulnerabilities in Navigator for i and Digital Certificate Manager for i.
Medium 4.2
Published
Updated
Check this codebase for CVE-2026-18151 and fix it if it is affected.
What it is: CVE-2026-18151 is a medium-severity vulnerability in IBM i, published on 14 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-18151 in the wild and no public exploit code.
Affected product: IBM i. 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-2026-18151/ (Markdown: https://insights.sbomify.com/CVE-2026-18151/index.md)
A race condition in IBM i's Navigator and Digital Certificate Manager allows remote authenticated attackers to obtain sensitive information.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-18151?
CVE-2026-18151 is a medium-severity vulnerability in IBM i, published on 14 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to obtain sensitive information due to a race condition during the WebSocket handshake process.
Weakness: CWE-362
Which versions are affected by CVE-2026-18151?
How do I fix CVE-2026-18151?
No fix has been published for CVE-2026-18151 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-18151 being exploited?
There is no known exploitation of CVE-2026-18151 in the wild and no public exploit code.
Sources
Also known as GHSA-6j4g-7933-5cfh.