CVE-2021-41176

Name: CVE-2021-41176
Creator: NVD / NIST
Published: 2021-10-25T17:15:09.38+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 0.50%

Last modified Jun 17, 2026

CVE-2021-41176 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. 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. EPSS estimates a 0.50% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

4.3/10

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

EPSS Probability

0.50%

39.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-352

Affected Software

Vendor	Product	Versions
Pterodactyl	Panel	< 1.6.3

References

https://github.com/pterodactyl/panel/commit/45999ba4ee1b2dcb12b4a2fa2cedfb6b5d66fac2Patch, Third Party Advisory
https://github.com/pterodactyl/panel/releases/tag/v1.6.3Product, Third Party Advisory
https://github.com/pterodactyl/panel/security/advisories/GHSA-m49f-hcxp-6hm6Third Party Advisory
https://github.com/pterodactyl/panel/commit/45999ba4ee1b2dcb12b4a2fa2cedfb6b5d66fac2Patch, Third Party Advisory
https://github.com/pterodactyl/panel/releases/tag/v1.6.3Product, Third Party Advisory
https://github.com/pterodactyl/panel/security/advisories/GHSA-m49f-hcxp-6hm6Third Party Advisory

Timeline

Published: Oct 25, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-41176?

How severe is CVE-2021-41176?

CVE-2021-41176 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.50% probability of exploitation in the next 30 days.

How do I fix CVE-2021-41176?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-41176?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST