# CVE-2026-110908: Command injection in pfSense-pkg-frr

> Authenticated users can execute arbitrary commands as root via OS command injection in the FRR status filter of the pfSense package.

- **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:** 15 Oct 2026
- **Updated:** 15 Oct 2026
- **Also known as:** GHSA-gv3v-jfq5-gj6p

## What is CVE-2026-110908?

CVE-2026-110908 is a high-severity command injection vulnerability in Netgate pfSense-pkg-frr, published on 15 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Netgate pfSense FRR package (pfSense-pkg-frr) 2.0.2_1 and source revision 2.1.2_1 contain an OS command injection vulnerability in the FRR status filter. An authenticated WebGUI user with only the page-status-frr privilege can supply a filter value that breaks out of a single-quoted sed expression into which escapeshellarg() output is concatenated. Shell command substitution is then evaluated by a popen() pipeline, allowing attacker-selected commands to execute as root. There are updated FRR packages for pfSense Plus 26.07/26.03.1 and CE 2.9.0/2.8.1.

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command)

## Which versions are affected by CVE-2026-110908?


## How do I fix CVE-2026-110908?

No fix has been published for CVE-2026-110908 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-110908 being exploited?

There is no known exploitation of CVE-2026-110908 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-110908 and fix it if it is affected.

What it is: CVE-2026-110908 is a high-severity command injection vulnerability in Netgate pfSense-pkg-frr, published on 15 Oct 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-2026-110908 in the wild and no public exploit code.

Affected product: Netgate pfSense-pkg-frr. 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-2026-110908/ (Markdown: https://insights.sbomify.com/CVE-2026-110908/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-110908
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-110908
- OSV: https://osv.dev/vulnerability/CVE-2026-110908

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-110908/
Summaries are generated and may contain mistakes; the official description above is the record.