# CoreWCF vulnerabilities

Source: https://junglewise.ai/threats/vendors/corewcf  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/vendors/corewcf.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 11 vulnerabilities in CoreWCF: 0 in the last 7 days and 0 in the last 90 days, 1 of them critical and 0 exploited in the wild. The most recent, CVE-2026-54784, was published on 8 July 2026. 1 technology has a page of its own.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 0
- All time: 11 (1 critical, 0 exploited in the wild)

## About CoreWCF

CoreWCF is an open-source community project providing a port of WCF to the .NET modern platform.

## Latest CoreWCF vulnerabilities

- [CVE-2026-54784: CoreWCF cleartext proof key exposure in SPNEGO negotiation](https://junglewise.ai/threats/cve-2026-54784-corewcf-cleartext-proof-key-exposure-in-spnego-negotiation) (high, CVSS 7.4, published 8 Jul 2026)
- [CVE-2026-54783: CoreWCF signature verification bypass in WS-Security](https://junglewise.ai/threats/cve-2026-54783-corewcf-signature-verification-bypass-in-ws-security) (high, CVSS 7.4, published 8 Jul 2026)
- [CVE-2026-54782: CoreWCF authentication bypass in SAML token validation](https://junglewise.ai/threats/cve-2026-54782-corewcf-authentication-bypass-in-saml-token-validation) (critical, CVSS 10, published 8 Jul 2026)
- [CVE-2026-54781: CoreWCF improper authentication in SAML SamlSecurityTokenHandler](https://junglewise.ai/threats/cve-2026-54781-corewcf-improper-authentication-in-saml-samlsecuritytokenhandler) (high, CVSS 7.4, published 8 Jul 2026)
- [CVE-2026-54780: CoreWCF algorithm downgrade in WS-Security receive pipeline](https://junglewise.ai/threats/cve-2026-54780-corewcf-algorithm-downgrade-in-ws-security-receive-pipeline) (low, CVSS 3.7, published 8 Jul 2026)
- [CVE-2026-54779: CoreWCF SAML token replay protection bypass in DefaultTokenReplayCache](https://junglewise.ai/threats/cve-2026-54779-corewcf-saml-token-replay-protection-bypass-in) (medium, CVSS 5.9, published 8 Jul 2026)
- [CVE-2026-54778: CoreWCF race condition in UnixDomainSocket identity resolution](https://junglewise.ai/threats/cve-2026-54778-corewcf-race-condition-in-unixdomainsocket-identity-resolution) (medium, CVSS 6.2, published 8 Jul 2026)
- [CVE-2026-54775: CoreWCF denial of service via Kafka tombstone record](https://junglewise.ai/threats/cve-2026-54775-corewcf-denial-of-service-via-kafka-tombstone-record) (medium, CVSS 6.5, published 8 Jul 2026)
- [CVE-2026-54774: CoreWCF SAML signature bypass in SamlSerializer](https://junglewise.ai/threats/cve-2026-54774-corewcf-saml-signature-bypass-in-samlserializer) (high, CVSS 7.4, published 8 Jul 2026)
- [CVE-2026-54773: CoreWCF improper signature verification in WS-Security](https://junglewise.ai/threats/cve-2026-54773-corewcf-improper-signature-verification-in-ws-security) (medium, CVSS 5.9, published 8 Jul 2026)
- [CVE-2026-54777: CoreWCF NetNamedPipe race condition in NamedPipeListener](https://junglewise.ai/threats/cve-2026-54777-corewcf-netnamedpipe-race-condition-in-namedpipelistener) (medium, CVSS 6.5, published 8 Jul 2026)

## Most severe CoreWCF vulnerabilities

- [CVE-2026-54782: CoreWCF authentication bypass in SAML token validation](https://junglewise.ai/threats/cve-2026-54782-corewcf-authentication-bypass-in-saml-token-validation) (critical, CVSS 10, published 8 Jul 2026)
- [CVE-2026-54784: CoreWCF cleartext proof key exposure in SPNEGO negotiation](https://junglewise.ai/threats/cve-2026-54784-corewcf-cleartext-proof-key-exposure-in-spnego-negotiation) (high, CVSS 7.4, published 8 Jul 2026)
- [CVE-2026-54781: CoreWCF improper authentication in SAML SamlSecurityTokenHandler](https://junglewise.ai/threats/cve-2026-54781-corewcf-improper-authentication-in-saml-samlsecuritytokenhandler) (high, CVSS 7.4, published 8 Jul 2026)
- [CVE-2026-54774: CoreWCF SAML signature bypass in SamlSerializer](https://junglewise.ai/threats/cve-2026-54774-corewcf-saml-signature-bypass-in-samlserializer) (high, CVSS 7.4, published 8 Jul 2026)
- [CVE-2026-54783: CoreWCF signature verification bypass in WS-Security](https://junglewise.ai/threats/cve-2026-54783-corewcf-signature-verification-bypass-in-ws-security) (high, CVSS 7.4, published 8 Jul 2026)
- [CVE-2026-54775: CoreWCF denial of service via Kafka tombstone record](https://junglewise.ai/threats/cve-2026-54775-corewcf-denial-of-service-via-kafka-tombstone-record) (medium, CVSS 6.5, published 8 Jul 2026)
- [CVE-2026-54777: CoreWCF NetNamedPipe race condition in NamedPipeListener](https://junglewise.ai/threats/cve-2026-54777-corewcf-netnamedpipe-race-condition-in-namedpipelistener) (medium, CVSS 6.5, published 8 Jul 2026)
- [CVE-2026-54778: CoreWCF race condition in UnixDomainSocket identity resolution](https://junglewise.ai/threats/cve-2026-54778-corewcf-race-condition-in-unixdomainsocket-identity-resolution) (medium, CVSS 6.2, published 8 Jul 2026)
- [CVE-2026-54779: CoreWCF SAML token replay protection bypass in DefaultTokenReplayCache](https://junglewise.ai/threats/cve-2026-54779-corewcf-saml-token-replay-protection-bypass-in) (medium, CVSS 5.9, published 8 Jul 2026)
- [CVE-2026-54773: CoreWCF improper signature verification in WS-Security](https://junglewise.ai/threats/cve-2026-54773-corewcf-improper-signature-verification-in-ws-security) (medium, CVSS 5.9, published 8 Jul 2026)

## Vulnerabilities per week

Nothing was published in the last eight weeks.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## CoreWCF technologies

- [CoreWCF](https://junglewise.ai/threats/technologies/corewcf): 11 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "CoreWCF vulnerabilities", https://junglewise.ai/threats/vendors/corewcf, 9 November 2026.