CVE-2026-34460 Details
Description
NamelessMC is website software for Minecraft servers. In versions 2.2.4 and prior, the OAuth callback handling does not validate the state parameter server-side before exchanging the authorization code. This allows an attacker to capture a valid OAuth callback URL for their own account and cause a victim's browser to navigate to it, resulting in the victim's session being authenticated as the attacker-linked account (OAuth login CSRF / session swapping). This is patched in version 2.2.5.
A vulnerability in NamelessMC's OAuth callback handling in versions through 2.2.4 allows for Cross-Site Request Forgery (CSRF) attacks during the OAuth login process. The issue arises because the application does not validate the 'state' parameter on the server side before exchanging the authorization code. This oversight enables an attacker to capture a valid OAuth callback URL and trick a victim's browser into authenticating as the attacker's account. The vulnerability has been patched in version 2.2.5.
Users are advised to update to NamelessMC version 2.2.5, where this vulnerability has been patched.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jun 2, 2026CISA-ADP
Assessed Jun 2, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/NamelessMC/Nameless/security/advisories/GHSA-pmpw-2xvh-5xj6 | CISA-ADP | AdvisoryExploitRemedyVendor |
| https://github.com/NamelessMC/Nameless/security/advisories/GHSA-pmpw-2xvh-5xj6 | [email protected] | AdvisoryExploitRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-302 | Authentication Bypass by Assumed-Immutable Data | [email protected] |
| CWE-346 | Origin Validation Error | [email protected] |
| CWE-352 | Cross-Site Request Forgery (CSRF) | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| NamelessMC | <= 2.2.4 (semver) |
CPE
Remediation
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Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 22, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 2, 2026 | CVE Modified | CISA-ADP |
| Jun 2, 2026 | New CVE Received | [email protected] |