CVE-2026-39912

Katalog CVE

CVSS 9.1 · Critical EPSS 0,70%

Kerentanan Insertion of Sensitive Information Into Sent Data. Skor CVSS 3.1 9.1 (Critical) menurut vulncheck.com.

Deskripsi (NVD)

V2Board 1.6.1 through 1.7.4 and Xboard through 0.1.9 expose authentication tokens in HTTP response bodies of the loginWithMailLink endpoint when the login_with_mail_link_enable feature is active. Unauthenticated attackers can POST to the loginWithMailLink endpoint with a known email address to receive the full authentication URL in the response, then exchange the token at the token2Login endpoint to obtain a valid bearer token with complete account access including admin privileges.

Rincian

Terbit di NVD

9 April 2026

Terakhir diubah

14 Juli 2026

Status NVD

Deferred

CVSS 3.1

9.1 (Critical), sumber vulncheck.com
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-201: Insertion of Sensitive Information Into Sent Data

EPSS (30 hari)

0,70% peluang dieksploitasi; lebih tinggi dari 51,8% CVE lain

Produk dan versi terdampak

NVD belum mencantumkan data produk (CPE) untuk CVE ini. Produk yang terdampak biasanya disebut di deskripsi dan di advisory vendor pada daftar referensi.

Referensi dan perbaikan

• https://chocapikk.com/posts/2026/xboard-v2board-account-takeover/
• https://github.com/cedar2025/Xboard/blob/1fe6531924cc1ec662a88b9ef725afcf78d660bc/app/Http/Controllers/V1/Pass...
• https://github.com/cedar2025/Xboard/blob/1fe6531924cc1ec662a88b9ef725afcf78d660bc/app/Services/Auth/MailLinkSe...
• https://github.com/cedar2025/Xboard/commit/121511523f04882ec0c7447acd9b8ebcb8a47957
• https://github.com/cedar2025/Xboard/pull/873
• https://github.com/v2board/v2board/blob/0ca47622a50116d0ddd7ffb316b157afb57d25e8/app/Http/Controllers/Passport...
• https://github.com/v2board/v2board/pull/981
• https://www.vulncheck.com/advisories/v2board-xboard-authentication-token-exposure-via-loginwithmaillink