CVE Catalog

CVE-2026-107692

MediumCVSS 4.8
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.14%

3th percentile - higher than 3% of all known CVEs

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 on the network path can passively intercept and decompress this packet to reveal the plaintext JSON payload.

Risk Assessment

An attacker can temporarily impersonate the user, accessing game services and certain user data (email address, displayed phone number). It does not enable full account takeover or changes to security settings.

Recommendation

Update the game client to a version containing the fix, if available. Avoid using untrusted networks; consider using a VPN for gaming.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS