CVE-2021-41176 logout CSRF in Pterodactyl Panel

What is CVE-2021-41176?

CVE-2021-41176 is a medium-severity vulnerability in pterodactyl panel, published on 25 Oct 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Pterodactyl is an open-source game server management panel built with PHP 7, React, and Go. In affected versions of Pterodactyl a malicious user can trigger a user logout if a signed in user visits a malicious website that makes a request to the Panel's sign-out endpoint. This requires a targeted attack against a specific Panel instance, and serves only to sign a user out. **No user details are leaked, nor is any user data affected, this is simply an annoyance at worst.** This is fixed in version 1.6.3.

Weakness: CWE-352

Which versions are affected by CVE-2021-41176?

2 open source packages ship an affected version, including pterodactyl/panel. It affects 1 product.

Products include Pterodactyl Panel.

How do I fix CVE-2021-41176?

Upgrade pterodactyl/panel to 1.6.3 or later.

Is CVE-2021-41176 being exploited?

There is no known exploitation of CVE-2021-41176 in the wild and no public exploit code.

Other vulnerabilities in pterodactyl panel

• CVE-2026-26016 Pterodactyl Panel Allows Cross-Node Server Configuration Disclosure via Remote API Missing Authorization Critical 9.2
• CVE-2021-41129 Authentication bypass in Pterodactyl High 8.1
• CVE-2025-68954 Pterodactyl does not revoke SFTP access when server is deleted or permissions reduced High 7.5
• CVE-2019-1020002 Pterodactyl vulnerable to 2FA Sniffing High 7.5
• CVE-2025-69197 Pterodactyl TOTPs can be reused during validity window Medium 6.5

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-m49f-hcxp-6hm6.