CVE-2026-34460

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.

CVSS v3 5.4 MEDIUM

5.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/NamelessMC/Nameless/security/advisories/GHSA-pmpw-2xvh-5xj6
https://github.com/NamelessMC/Nameless/security/advisories/GHSA-pmpw-2xvh-5xj6

Configurations

No configuration.

History

No history.

Information

Published : 2026-06-02 16:16

Updated : 2026-07-22 19:10

NVD link : CVE-2026-34460

Mitre link : CVE-2026-34460

CVE.ORG link : CVE-2026-34460

JSON object : View

Products Affected

No product.

CWE

CWE-302

Authentication Bypass by Assumed-Immutable Data

CWE-346

Origin Validation Error

CWE-352

Cross-Site Request Forgery (CSRF)

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