PT-2026-29593 · Reviactyl · Reviactyl

Aymenelouadi · Published 2026-04-01 · Updated 2026-04-01 · CVE-2026-34456

Positive Technologies · (AI Summary)

CVSS v3.1

9.1

Critical

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

Name of the Vulnerable Software and Affected Versions Reviactyl versions 26.2.0-beta.1 through 26.2.0-beta.4

Description A flaw in the OAuth authentication process allowed for 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, resulting in a full account takeover without prior authentication.

Recommendations Update to version 26.2.0-beta.5 or later.

Fix

Improper Access Control

Weakness Enumeration

CWE-284

Related Identifiers

CVE-2026-34456

Affected Products

Reviactyl

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2026-34456 · Security Note
• https://github.com/reviactyl/panel/releases/tag/v26.2.0-beta.5 · Note
• https://github.com/reviactyl/panel/commit/fe0c29fc62fefe354c9ab8936dfe30fdb586a896 · Note
• https://github.com/reviactyl/panel/security/advisories/GHSA-8mcf-rp68-xhfg · Note
• https://twitter.com/0dayPublishing/status/2039434978014941688 · Twitter Post