CVE•Published 2026-07-08•Modified 2026-07-10•1 article on news•5 live references•NVD data
CVE-2026-54782
Vulnerability data via NVD (ingested)
CVSS v3.1
10.0
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
EPSS percentile
—
Weaknesses (CWE)
Description
CoreWCF is a port of the service side of Windows Communication Foundation (WCF) to .NET Core. Prior to 1.8.1 and 1.9.1, CoreWCF SAML 1.1 and SAML 2.0 token validation does not correctly resolve the issuer signing key or require signed tokens when IdentityConfiguration is used with federated bindings, allowing an unauthenticated remote attacker to impersonate any principal the trusted STS could issue. This issue is fixed in versions 1.8.1 and 1.9.1.
Timeline
Published 2026-07-08
Modified 2026-07-10
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-2026-54782Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-54782Censys host search filtered to this CVE id.
grep.app
CVE-2026-54782Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-54782GitHub code search for direct mentions.
Google dork
"CVE-2026-54782" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-54782 on GitHub.