CVE-2026-63435

Katalog CVE

CVSS 5.3 · Medium EPSS 0,45%

Kerentanan Interpretation Conflict. Skor CVSS 3.1 5.3 (Medium) menurut github.com.

Deskripsi (NVD)

Mail is an internet library for Ruby designed to handle email generation, parsing, and sending. Prior to 2.9.1, Mail::Utilities.q_value_decode and Mail::Utilities.b_value_decode used a single String#match and an overly greedy charset capture to decode only the first RFC 2047 encoded-word and mishandle surrounding or subsequent text. A crafted malformed encoded-word in an address display name or local part could cross ? delimiters and make decoded From, To, or Reply-To header values differ from the raw values inspected by a human reviewer or downstream parser, enabling apparent sender or recipient spoofing, phishing, or authorization-check bypass. This issue is fixed in version 2.9.1.

Rincian

Terbit di NVD

1 September 2026

Terakhir diubah

9 September 2026

Status NVD

Deferred

CVSS 3.1

5.3 (Medium), sumber github.com
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-436: Interpretation Conflict

EPSS (30 hari)

0,45% peluang dieksploitasi; lebih tinggi dari 37,1% 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://github.com/mikel/mail/commit/f9d59c2e447af42e2c3dec5a56b1bb25c7292859
• https://github.com/mikel/mail/pull/1664
• https://github.com/mikel/mail/releases/tag/2.9.1
• https://github.com/mikel/mail/security/advisories/GHSA-mvxr-6m87-mv2q