CVE-2026-100674: stoatchat before 0.15.5 Username Validation Bypass via Unicode Sanitization
Fixed in 0.15.5 · Affected: stoatchat before 0.15.5 · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 14% of scored CVEs
DescriptionCVE.org
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.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- stoatchat · stoatchatbefore 0.15.5
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- stoatchat
- Published
- September 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-100674 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.