# CVE-2026-27556: Local File Inclusion in /index.php/ajax/save_iodd_parameters

> A low-privileged attacker can exploit a local file inclusion vulnerability to execute arbitrary PHP code on industrial I/O devices.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 16 Sep 2026
- **Updated:** 16 Sep 2026
- **Also known as:** GHSA-fmvr-8vv5-53j5

## What is CVE-2026-27556?

CVE-2026-27556 is a high-severity path traversal vulnerability in Carlo Gavazzi Automation ICE2-8IOL-G65L-V1D, published on 16 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A low-privileged remote attacker can exploit a local file inclusion vulnerability in the /index.php/ajax/save_iodd_parameters endpoint using a valid operator cookie allowing execution of arbitrary PHP code on the device.

Weakness: CWE-98 (Improper Control of Filename for Include/Require Statement in PHP Program)

## Which versions are affected by CVE-2026-27556?


## How do I fix CVE-2026-27556?

No fix has been published for CVE-2026-27556 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-27556 being exploited?

There is no known exploitation of CVE-2026-27556 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-27556 and fix it if it is affected.

What it is: CVE-2026-27556 is a high-severity path traversal vulnerability in Carlo Gavazzi Automation ICE2-8IOL-G65L-V1D, published on 16 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-2026-27556 in the wild and no public exploit code.

Affected product: Carlo Gavazzi Automation ICE2-8IOL-G65L-V1D. 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-2026-27556/ (Markdown: https://insights.sbomify.com/CVE-2026-27556/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-27556
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-27556
- OSV: https://osv.dev/vulnerability/CVE-2026-27556

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-27556/
Summaries are generated and may contain mistakes; the official description above is the record.