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.
- 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-2026-110908?
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
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.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-110908 being exploited?
There is no known exploitation of CVE-2026-110908 in the wild and no public exploit code.
Sources
Also known as GHSA-gv3v-jfq5-gj6p.