CVE•Published 2026-09-12•0 articles on news•4 live references•NVD data
CVE-2026-90474
Vulnerability data via NVD (ingested)
CVSS v3.1
6.8
MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
EPSS percentile
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Weaknesses (CWE)
Description
MCPHub before 1.0.32 contains an authentication bypass vulnerability in its embedded OAuth 2.0 authorization server where client authentication is disabled by default and PKCE enforcement is optional. Attackers who obtain an authorization code through interception can redeem it for access tokens without providing a client secret or PKCE verifier, gaining access to victim accounts and their privileges.
Timeline
Published 2026-09-12
Modified 2026-09-12
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).
More intel sources (5)
Shodan report
vuln:CVE-2026-90474Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-90474Censys host search filtered to this CVE id.
grep.app
CVE-2026-90474Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-90474GitHub code search for direct mentions.
Google dork
"CVE-2026-90474" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-90474 on GitHub.
We haven't classified any articles referencing CVE-2026-90474 yet. The external references above still apply.