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.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.007 (51.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 51.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.007 · change: +0.002
Affected products
- Reviactyl Panel — versions >= 26.2.0-beta.1, < 26.2.0-beta.5
- Reviactyl — versions 26.2.0
Weakness classification (CWE)
References
- github.com/reviactyl/panel/security/advisories/GHSA-8mcf-rp68-xhfg (Patch, Mitigation, Vendor Advisory)
- github.com/reviactyl/panel/commit/fe0c29fc62fefe354c9ab8936dfe30fdb586a896 (Patch)
- github.com/reviactyl/panel/releases/tag/v26.2.0-beta.5 (Product, 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.