# CVE-2026-34460

## Summary

- **CVE ID:** CVE-2026-34460
- **Severity:** MEDIUM
- **CVSS Score:** 5.4 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N)
- **CWE:** CWE-302, CWE-346, CWE-352
- **Published:** Jun 2, 2026
- **Last Modified:** Jun 2, 2026

## 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.

## Affected Products

- NamelessMC — Nameless (< 2.2.5)

## References

- [CNA](https://github.com/NamelessMC/Nameless/security/advisories/GHSA-pmpw-2xvh-5xj6)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.11%
- **EPSS Percentile:** 1.6

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._