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CoreWCF: SPNEGO SecurityContextToken proof key wrapped without confidentiality

🗓️ 19 Jun 2026 20:47:17Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 37 Views

CoreWCF SPNEGO SCT proof key can be observed and used to impersonate a user until fix in v1.9.1.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-54784
8 Jul 202622:18
–attackerkb
circl
Circl
CVE-2026-54784
9 Jul 202601:22
–circl
cve
CVE
CVE-2026-54784
8 Jul 202622:18
–cve
cvelist
Cvelist
CVE-2026-54784 CoreWCF: SPNEGO SecurityContextToken proof key wrapped without confidentiality
8 Jul 202622:18
–cvelist
euvd
EUVD
EUVD-2026-42471
8 Jul 202622:18
–euvd
mend
Mend
CVE-2026-54784
8 Jul 202622:18
–mend
nvd
NVD
CVE-2026-54784
8 Jul 202623:16
–nvd
osv_ghsa
osv_ghsa
GHSA-2288-8H3R-CQGG CoreWCF: SPNEGO SecurityContextToken proof key wrapped without confidentiality
19 Jun 202620:47
–osv_ghsa
ptsecurity
Positive Technologies
PT-2026-51081
19 Jun 202600:00
–ptsecurity
rapid7
Rapid7 Vulnerability Database (full)
CVE-2026-54784: Missing Encryption of Sensitive Data
8 Jul 202600:00
–rapid7
Rows per page
Vulners
Node
corewcf.primitivesRange1.9.0–1.9.1nuget

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19 Jun 2026 20:47Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.17.4
EPSS0.00272
SSVC
37