CVE-2026-33544

Katalog CVE

CVSS 7.7 · High EPSS 0,33%

Kerentanan Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') pada tinyauth. Skor CVSS 3.1 7.7 (High) menurut github.com.

Deskripsi (NVD)

Tinyauth is an authentication and authorization server. Prior to version 5.0.5, all three OAuth service implementations (GenericOAuthService, GithubOAuthService, GoogleOAuthService) store PKCE verifiers and access tokens as mutable struct fields on singleton instances shared across all concurrent requests. When two users initiate OAuth login for the same provider concurrently, a race condition between VerifyCode() and Userinfo() causes one user to receive a session with the other user's identity. This issue has been patched in version 5.0.5.

Rincian

Terbit di NVD

2 April 2026

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

7.7 (High), sumber github.com
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

EPSS (30 hari)

0,33% peluang dieksploitasi; lebih tinggi dari 24,9% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/steveiliop56/tinyauth/security/advisories/GHSA-9q5m-jfc4-wc92 exploit · mitigasi · advisory vendor
• https://github.com/steveiliop56/tinyauth/commit/f26c2171610d5c2dfbba2edb6ccd39490e349803 patch
• https://github.com/steveiliop56/tinyauth/releases/tag/v5.0.5 product · release notes