Is CVE-2026-34456 actively exploited?

No active exploitation of CVE-2026-34456 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-34456 be exploited remotely?

Yes. CVE-2026-34456 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-34456?

CVE-2026-34456 has a CVSS score of 9.1 (CRITICAL).

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CRITICAL

CVE-2026-34456

CWE-284Published: April 1, 2026· Updated: Apr 3, 2026

9.1

CVSS v3.1

EPSS:0.07%probability of exploitation in 30 daysPercentile:20.9th

Official Description

Reviactyl is an open-source game server management panel built using Laravel, React, FilamentPHP, Vite, and Go. From version 26.2.0-beta.1 to before version 26.2.0-beta.5, a vulnerability in the OAuth authentication flow allowed automatic linking of social accounts based solely on matching email addresses. An attacker could create or control a social account (e.g., Google, GitHub, Discord) using a victim’s email address and gain full access to the victim's account without knowing their password. This results in a full account takeover with no prior authentication required. This issue has been patched in version 26.2.0-beta.5.

NVD Source

Technical Analysis

CVE-2026-34456 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), with a CVSS base score of 9.1.