# CVE-2026-2311: IBM i is affected by a privilege escalation vulnerability in Web Administration GUI []

> A malicious actor can execute user-controlled code with administrator privileges due to an invalid authorization check in the IBM i Web Administration GUI.

- **Severity:** Medium 6.4 (`CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 30 Apr 2026
- **Updated:** 2 May 2026
- **Also known as:** GHSA-q9c4-6v4r-wrmm

## What is CVE-2026-2311?

CVE-2026-2311 is a medium-severity vulnerability in Ibm I, published on 30 Apr 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

### Official description

IBM i 7.6, 7.5, 7.4, 7.3, and 7.2 s vulnerable to privilege escalation caused by an invalid IBM i Web Administration GUI authorization check.  A malicious actor could cause user-controlled code to run with administrator privilege.

Weakness: CWE-284 (Improper Access Control)

## Which versions are affected by CVE-2026-2311?

It affects 1 product.


Products: Ibm I.

## How do I fix CVE-2026-2311?

No fix has been published for CVE-2026-2311 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-2311 being exploited?

There is no known exploitation of CVE-2026-2311 in the wild and no public exploit code.

## Other vulnerabilities in Ibm I

- [CVE-2026-96119](https://insights.sbomify.com/CVE-2026-96119/): IBM i is Affected By An Improper Control of Code Generation Vulnerability in HTTP Server Administration GUI (critical 9.9)
- [CVE-2026-16860](https://insights.sbomify.com/CVE-2026-16860/): IBM i is Affected By Remote Code Execution Vulnerability [] (critical 9.9)
- [CVE-2026-17083](https://insights.sbomify.com/CVE-2026-17083/): IBM i is Affected By Multiple Vulnerabilities in the Debug Server (critical 9.8)
- [CVE-2026-17218](https://insights.sbomify.com/CVE-2026-17218/): IBM i is Affected By Remote Code Execution Vulnerability in Line Printer Daemon [] (critical 9.8)
- [CVE-2026-17276](https://insights.sbomify.com/CVE-2026-17276/): IBM i is Affected By Multiple Vulnerabilities in Navigator for i (critical 9.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-2311 and fix it if it is affected.

What it is: CVE-2026-2311 is a medium-severity vulnerability in Ibm I, published on 30 Apr 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-2311 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-2026-2311/ (Markdown: https://insights.sbomify.com/CVE-2026-2311/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-2311
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-2311
- OSV: https://osv.dev/vulnerability/CVE-2026-2311

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-2311/
Summaries are generated and may contain mistakes; the official description above is the record.