---
id: CVE-2026-107692
title: War Thunder Account Impersonation
summary: >-
  The War Thunder game client transmits its authentication bearer token
  (auth_jwt) in the very first data packet after the TCP handshake, using only
  LZ4 compression rather than encryption. An attacker positioned on the network
  path can pas…
severity: medium
cvss: 4.8
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N'
cvssSource: adp
cwe:
  - CWE-319
vendor: Gaijin Entertainment
product: War Thunder
affected:
  - war_thunder >= 2.57.1.140 < 2.59.0.9
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-20T20:22:18.299343Z'
exploitAvailable: true
published: '2026-10-20'
updated: '2026-10-20'
sourceUpdated: '2026-10-20T20:22:22.419Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-107692'
references:
  - url: 'https://github.com/thewhatdohe/CVE-2026-107692'
tags:
  - cve.org
  - exploit-available
exploits:
  github: 1
  githubRepos:
    - 'https://github.com/thewhatdohe/CVE-2026-107692'
  checkedAt: '2026-10-20T21:19:24.670Z'
ingestedAt: '2026-10-20T20:18:14.529Z'
---

## Overview

The War Thunder game client transmits its authentication bearer token (auth_jwt) in the very first data packet after the TCP handshake, using only LZ4 compression rather than encryption. An attacker positioned on the network path can passively intercept and decompress this packet to reveal the plaintext JSON payload. This vulnerability allows for temporary authenticated impersonation, enabling an attacker to access game services and certain user data (such as email address and displayed phone number) as the affected user. While this allows for unauthorized access to gameplay, it does not facilitate full account takeover, as it cannot be used to modify account security settings, change passwords, bypass two-factor authentication for account management, or access financial information.

## Affected

- `war_thunder >= 2.57.1.140 < 2.59.0.9`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.