Vulnerability in Reviactyl Panel
CVE-2026-34456
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.
EPSS: 0.005 (37.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
Affected products
- Reviactyl Panel — versions >= 26.2.0-beta.1, < 26.2.0-beta.5
- Reviactyl — versions 26.2.0
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Patch, Mitigation, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Product, x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2026-34456?
- CVE-2026-34456 is a critical-severity vulnerability in Reviactyl Panel, classified under Improper Access Control. CVSS score: 9.1/10. Published 2026-04-01.
- How severe is CVE-2026-34456?
- Critical severity. CVSS v3 base score is 9.1 out of 10.