CVE-2026-54773 Details
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 WS-Security signature verification performs a document-wide ds:Signature lookup, allowing an unauthenticated remote attacker to place a SOAP header before wsse:Security and cause WSSecurityOneDotZeroReceiveSecurityHeader to verify an attacker-supplied signature instead of the security header signature. This issue is fixed in versions 1.8.1 and 1.9.1.
A vulnerability in CoreWCF's WS-Security signature verification allows an unauthenticated remote attacker to manipulate signature validation. This issue arises because the signature verification process performs a document-wide lookup for the ds:Signature element. Attackers can exploit this by placing a SOAP header before the wsse:Security header, leading the WSSecurityOneDotZeroReceiveSecurityHeader component to verify an attacker-supplied signature instead of the intended one. This vulnerability affects CoreWCF versions 1.8.0 and 1.9.0, and is present in the CoreWCF.Primitives package.
Users can upgrade to CoreWCF versions 1.8.1 or 1.9.1, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jul 8, 2026CISA-ADP
Assessed Jul 10, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/CoreWCF/CoreWCF/commit/0589692d4b9a41d21b34ac48281e95f6df7f4ce5 | [email protected] | Source CodeVendor |
| https://github.com/CoreWCF/CoreWCF/commit/30aef805270976c42477e3f2a05f4e563d86e247 | [email protected] | Source CodeVendor |
| https://github.com/CoreWCF/CoreWCF/commit/4618f24165ad018ad3ed2636bf8c3bc87d2a3be2 | [email protected] | Source CodeVendor |
| https://github.com/CoreWCF/CoreWCF/releases/tag/v1.8.1 | [email protected] | Release NotesVendor |
| https://github.com/CoreWCF/CoreWCF/releases/tag/v1.9.1 | [email protected] | Release NotesVendor |
| https://github.com/CoreWCF/CoreWCF/security/advisories/GHSA-jc6x-rj79-w4mx | [email protected] | AdvisoryRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-347 | Improper Verification of Cryptographic Signature | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| CoreWCF | 1.8.0 (semver) 1.9.0 (semver) |
CPE
Remediation
| |
| CoreWCF.ConfigurationManager | All versions |
CPE
Remediation
| |
| CoreWCF.Http | All versions |
CPE
Remediation
| |
| CoreWCF.Kafka | All versions |
CPE
Remediation
| |
| CoreWCF.Kafka.Client | All versions |
CPE
Remediation
| |
| CoreWCF.MSMQ | All versions |
CPE
Remediation
| |
| CoreWCF.NetFramingBase | All versions |
CPE
Remediation
| |
| CoreWCF.NetNamedPipe | All versions |
CPE
Remediation
| |
| CoreWCF.NetTcp | All versions |
CPE
Remediation
| |
| CoreWCF.Primitives | All versions |
CPE
Remediation
| |
| CoreWCF.Queue | All versions |
CPE
Remediation
| |
| CoreWCF.RabbitMQ | All versions |
CPE
Remediation
| |
| CoreWCF.RabbitMQ.Client | All versions |
CPE
Remediation
| |
| CoreWCF.Templates | All versions |
CPE
Remediation
| |
| CoreWCF.UnixDomainSocket | All versions |
CPE
Remediation
| |
| CoreWCF.WebHttp | All versions |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 10, 2026 | CVE Modified | CISA-ADP |
| Jul 8, 2026 | New CVE Received | [email protected] |