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Vulnerability record · CVE-2026-34456 · published 1 April 2026

CVE-2026-34456: Reviactyl improper access control vulnerability

RReviactyl · Reviactyl

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.

9.8 CVSS 3.1 Critical EPSS 0.69% · top 49.1% CWE-284 · Improper access control
9.8CVSS 3.1 base score
0.69%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/reviactyl/panel/commit/fe0c29fc62fefe354c9ab8936dfe30fdb586a896 Patch
https://github.com/reviactyl/panel/releases/tag/v26.2.0-beta.5 ProductRelease Notes
https://github.com/reviactyl/panel/security/advisories/GHSA-8mcf-rp68-xhfg MitigationPatchVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-34456), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.