CVE•Published 2026-09-26•Modified 2026-09-30•0 articles on news•4 live references•NVD data
CVE-2026-100674
Vulnerability data via NVD (ingested)
CVSS v3.1
4.3
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
EPSS percentile
13
Exploit Prediction Scoring System · top 87% of all CVEs
Weaknesses (CWE)
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.
Timeline
Published 2026-09-26
Modified 2026-09-30
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag0 hosts
vuln:CVE-2026-100674Hosts Shodan has explicitly fingerprinted as vulnerable.
More intel sources (5)
Shodan report
vuln:CVE-2026-100674Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-100674Censys host search filtered to this CVE id.
grep.app
CVE-2026-100674Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-100674GitHub code search for direct mentions.
Google dork
"CVE-2026-100674" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-100674 on GitHub.
We haven't classified any articles referencing CVE-2026-100674 yet. The external references above still apply.