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CoreWCF: SAML SubjectConfirmation methods and holder-of-key proof keys are not enforced

🗓️ 19 Jun 2026 20:47:08Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 28 Views

CoreWCF fails to enforce holder-of-key and nonstandard subject confirmation methods, enabling bypass.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-54781
8 Jul 202622:19
–attackerkb
circl
Circl
CVE-2026-54781
9 Jul 202601:40
–circl
cve
CVE
CVE-2026-54781
8 Jul 202622:19
–cve
cvelist
Cvelist
CVE-2026-54781 CoreWCF: SAML SubjectConfirmation methods and holder-of-key proof keys are not enforced
8 Jul 202622:19
–cvelist
euvd
EUVD
EUVD-2026-42472
8 Jul 202622:19
–euvd
mend
Mend
CVE-2026-54781
8 Jul 202622:19
–mend
nvd
NVD
CVE-2026-54781
8 Jul 202623:16
–nvd
osv_ghsa
osv_ghsa
GHSA-48PQ-2XQ3-C2M4 CoreWCF: SAML SubjectConfirmation methods and holder-of-key proof keys are not enforced
19 Jun 202620:47
–osv_ghsa
ptsecurity
Positive Technologies
PT-2026-51078
19 Jun 202600:00
–ptsecurity
rapid7
Rapid7 Vulnerability Database (full)
CVE-2026-54781: Improper Authentication
8 Jul 202600:00
–rapid7
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Vulners
Node
OR
corewcf.primitivesRange1.9.0–1.9.1nuget
corewcf.primitivesRange<1.8.1nuget

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19 Jun 2026 20:47Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.17.4
EPSS0.00248
SSVC
28