CVE-2026-50522

CVE-2026-50522 Poc : SharePoint Deserialization RCE SharePoint Server Unauthenticated Remote Code Execution via SecurityContextToken Cookie Deserialization Mass-scan exploit for CVE-2026-50522 targeting on-premises Microsoft SharePoint Server. Abuses insecure BinaryFormatter deserialization in th...

sharepoint-2026-poc

SharePoint /trust WS-Federation Deserialization: PoC & Detection Notes Live writeup GitHub Pages: https://sp-poc.wismansec.com/ HTML rendering of this document. Affected: SharePoint Server 2016, 2019, and Subscription Edition. Reconstruction of a SharePoint Server Subscription Edition intrusion i...

CVE-2026-54784

CoreWCF is a port of the service side of Windows Communication Foundation WCF to .NET Core. In version 1.9.0, CoreWCF SPNEGO SecurityContextToken negotiation can expose the proof key recovered from the RSTR when TransportWithMessageCredential with Windows client credentials and session...

CVE-2026-54784 CoreWCF: SPNEGO SecurityContextToken proof key wrapped without confidentiality

CoreWCF is a port of the service side of Windows Communication Foundation WCF to .NET Core. In version 1.9.0, CoreWCF SPNEGO SecurityContextToken negotiation can expose the proof key recovered from the RSTR when TransportWithMessageCredential with Windows client credentials and session...

CVE-2026-54784: Missing Encryption of Sensitive Data

CoreWCF is a port of the service side of Windows Communication Foundation WCF to .NET Core. In version 1.9.0, CoreWCF SPNEGO SecurityContextToken negotiation can expose the proof key recovered from the RSTR when TransportWithMessageCredential with Windows client credentials and session...

GHSA-2288-8H3R-CQGG CoreWCF: SPNEGO SecurityContextToken proof key wrapped without confidentiality

Impact When the proof key recovered from the RSTR can be observed by a party that is not the legitimate client, that party can impersonate the authenticated Windows principal for the lifetime of the SCT default 10 hours and decrypt or forge any subsequent WS‑SecureConversation traffic that uses...