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CVE-2026-54773

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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:f1dc4d60f82734409b107f3d8b4fecfe5f8c4a92caa32dab38717175d841481b
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"CoreWCF","vendor":"CoreWCF","versions":[{"status":"affected","version":">= 1.9.0, < 1.9.1"},{"status":"affected","version":"< 1.8.1"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a20bf211cb01bb52e8296a2464e83e6669bb4f17783ea3cf4c27391d04230f03 · sha256:7075e2f20cb1c42e… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.9,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:a20bf211cb01bb52e8296a2464e83e6669bb4f17783ea3cf4c27391d04230f03 · sha256:7075e2f20cb1c42e… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-347","description":"CWE-347: Improper Verification of Cryptographic Signature","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:a20bf211cb01bb52e8296a2464e83e6669bb4f17783ea3cf4c27391d04230f03 · sha256:7075e2f20cb1c42e… · /containers/cna/problemTypes/0/descriptions/0

Source references

6 source assertions
{"name":"https://github.com/CoreWCF/CoreWCF/commit/0589692d4b9a41d21b34ac48281e95f6df7f4ce5","tags":["x_refsource_MISC"],"url":"https://github.com/CoreWCF/CoreWCF/commit/0589692d4b9a41d21b34ac48281e95f6df7f4ce5"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a20bf211cb01bb52e8296a2464e83e6669bb4f17783ea3cf4c27391d04230f03 · sha256:7075e2f20cb1c42e… · /containers/cna/references/1
{"name":"https://github.com/CoreWCF/CoreWCF/commit/30aef805270976c42477e3f2a05f4e563d86e247","tags":["x_refsource_MISC"],"url":"https://github.com/CoreWCF/CoreWCF/commit/30aef805270976c42477e3f2a05f4e563d86e247"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a20bf211cb01bb52e8296a2464e83e6669bb4f17783ea3cf4c27391d04230f03 · sha256:7075e2f20cb1c42e… · /containers/cna/references/2
{"name":"https://github.com/CoreWCF/CoreWCF/commit/4618f24165ad018ad3ed2636bf8c3bc87d2a3be2","tags":["x_refsource_MISC"],"url":"https://github.com/CoreWCF/CoreWCF/commit/4618f24165ad018ad3ed2636bf8c3bc87d2a3be2"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a20bf211cb01bb52e8296a2464e83e6669bb4f17783ea3cf4c27391d04230f03 · sha256:7075e2f20cb1c42e… · /containers/cna/references/3
{"name":"https://github.com/CoreWCF/CoreWCF/releases/tag/v1.8.1","tags":["x_refsource_MISC"],"url":"https://github.com/CoreWCF/CoreWCF/releases/tag/v1.8.1"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a20bf211cb01bb52e8296a2464e83e6669bb4f17783ea3cf4c27391d04230f03 · sha256:7075e2f20cb1c42e… · /containers/cna/references/4
{"name":"https://github.com/CoreWCF/CoreWCF/releases/tag/v1.9.1","tags":["x_refsource_MISC"],"url":"https://github.com/CoreWCF/CoreWCF/releases/tag/v1.9.1"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a20bf211cb01bb52e8296a2464e83e6669bb4f17783ea3cf4c27391d04230f03 · sha256:7075e2f20cb1c42e… · /containers/cna/references/5
{"name":"https://github.com/CoreWCF/CoreWCF/security/advisories/GHSA-jc6x-rj79-w4mx","tags":["x_refsource_CONFIRM"],"url":"https://github.com/CoreWCF/CoreWCF/security/advisories/GHSA-jc6x-rj79-w4mx"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a20bf211cb01bb52e8296a2464e83e6669bb4f17783ea3cf4c27391d04230f03 · sha256:7075e2f20cb1c42e… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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