CVE-2026-34456

CRITICAL
INFO Priority: 0.05 BB Relevance: 80/100
Published: 2026-04-01 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: Unchanged
C: High
I: High
A: High

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.

Weakness Classification (1)

Affected Software (4)

VendorProductVersion
reviactyl reviactyl 26.2.0
reviactyl reviactyl 26.2.0
reviactyl reviactyl 26.2.0
reviactyl reviactyl 26.2.0

Bug Bounty Relevance

80 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

9.8 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploitation Probability

0.46%
Raw Score 0.004640
Percentile 40.1%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00464
2026-10-28
0.00455

Intelligence Sources

nvd ref →