CVE-2026-100674

Katalog CVE

CVSS 4.3 · Medium EPSS 0,23%

Kerentanan Incorrect Behavior Order: Validate Before Canonicalize. Skor CVSS 3.1 4.3 (Medium) menurut vulncheck.com.

Deskripsi (NVD)

stoatchat before 0.15.5 fails to revalidate usernames after Unicode sanitization, allowing attackers to create usernames with forbidden characters by submitting Unicode letters that transform into rejected characters. Attackers can bypass character allowlists and length limits to create reserved-name lookalikes, embed special characters, and exceed the 32-character storage limit.

Rincian

Terbit di NVD

26 September 2026

Terakhir diubah

30 September 2026

Status NVD

Deferred

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-180: Incorrect Behavior Order: Validate Before Canonicalize

EPSS (30 hari)

0,23% peluang dieksploitasi; lebih tinggi dari 13,2% 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/stoatchat/stoatchat/security/advisories/GHSA-qcwh-c934-wrv5
• https://www.vulncheck.com/advisories/stoatchat-before-0.15.5-username-validation-bypass-via-unicode-sanitizati...