CVE-2026-108598 Floci 1.1.0 before 2.2.0 RCE via API Gateway VTL Mapping Templates
Unauthenticated attackers can execute arbitrary OS commands in the Floci JVM by injecting malicious code into Velocity mapping templates.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-108598?
CVE-2026-108598 is a critical code injection vulnerability in floci-io floci, published on 10 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Floci 1.1.0 before 2.2.0 contains a code injection vulnerability in VtlTemplateEngine that allows unauthenticated attackers to execute commands via unrestricted Velocity mapping templates. Attackers can create a REST API with a MOCK integration whose template uses $util reflection to reach Runtime or ProcessBuilder, executing OS commands in the Floci JVM.
Weakness: CWE-94
Which versions are affected by CVE-2026-108598?
How do I fix CVE-2026-108598?
No fix has been published for CVE-2026-108598 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-108598 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-108598 exists.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-3p4c-wp7w-mgjx, GHSA-c3c4-9g85-pfvc.