---
id: "CVE-2026-114198"
kind: "vulnerability"
aliases: ["CVE-2026-114198"]
title: "FLARE floss: crafted workspace file runs code on analyst's machine"
severity: "high"
cvss: 8.7
epss: 0.00116
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["floss", "malware-analysis", "package", "python", "reverse-engineering"]
not_affected_if: ["floss-3.2.0-or-later", "no-untrusted-viv-files"]
published_at: "2026-10-21T01:17:38+00:00"
first_seen_at: "2026-10-23T21:57:28+00:00"
updated_at: "2026-10-24T13:15:54+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-114198", "first_seen_at": "2026-10-23T21:57:28+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-114198", "first_seen_at": "2026-10-24T13:15:54+00:00"}]
---

# FLARE floss: crafted workspace file runs code on analyst's machine

FLOSS releases before 3.2.0 deserialize untrusted data from workspace files. An attacker who gets a crafted .viv or .exe.viv file to someone running floss can execute arbitrary code on that machine.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

Check the installed floss version; anything before 3.2.0 is affected. unknown for any other check.

## Fix

Upgrade floss to 3.2.0 or later. Do not pass untrusted .viv or .exe.viv workspaces to floss until upgraded.

## Timeline

- 2026-10-23T21:57:28+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-114198
- 2026-10-24T13:15:54+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2026-114198

## From the sources

Deserialization of untrusted data in Mandiant FLARE floss releases before 3.2.0 allows arbitrary code execution when a crafted .viv or .exe.viv workspace is passed to the floss utility

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_