CVE-2026-41263

Katalog CVE

CVSS 3.7 · Low EPSS 0,41%

Kerentanan Observable Timing Discrepancy pada traefik. Skor CVSS 3.1 3.7 (Low) menurut NVD.

Deskripsi (NVD)

Traefik is an HTTP reverse proxy and load balancer. Prior to versions 2.11.43, 3.6.14, and 3.7.0-rc.2, there is a timing side-channel vulnerability in Traefik's BasicAuth middleware that allows an attacker to enumerate valid usernames through response-time differences. The variable intended to hold a constant-time fallback secret always resolves to an empty string, causing the constant-time comparison to short-circuit in microseconds rather than performing a full bcrypt evaluation. This restores the original timing oracle and makes it possible to distinguish existing users from non-existing ones by measuring authentication response times. This issue has been patched in versions 2.11.43, 3.6.14, and 3.7.0-rc.2.

Rincian

Terbit di NVD

30 April 2026

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

3.7 (Low), sumber NVD
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-208: Observable Timing Discrepancy

EPSS (30 hari)

0,41% peluang dieksploitasi; lebih tinggi dari 33,6% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/traefik/traefik/security/advisories/GHSA-6x2q-h3cr-8j2h patch · advisory vendor
• https://github.com/traefik/traefik/releases/tag/v2.11.43 product · release notes
• https://github.com/traefik/traefik/releases/tag/v3.6.14 product · release notes
• https://github.com/traefik/traefik/releases/tag/v3.7.0-rc.2 product · release notes