CVE-2026-100674

MediumCVSS 4.3/10Last modified Sep 30, 2026

Description

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.

Metrics

CVSS 3.1 4.3/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Weakness enumeration

CWE-180

Affected software

No affected versions have been published.

Timeline

Published: Sep 26, 2026
Last modified: Sep 30, 2026
NVD status: Deferred

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