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, the CoreWCF WS-Security 1.0 receive pipeline validates ds:SignedInfo SignatureMethod against the configured SecurityAlgorithmSuite but does not validate each ds:Reference DigestMethod, allowing a sender to use a rejected digest algorithm such as SHA-1 while the message is still accepted. This issue is fixed in versions 1.8.1 and 1.9.1.
{
"cna_assigner": "GitHub_M",
"cwe_ids": [
"CWE-327",
"CWE-757"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54780.json"
}{
"extracted_events": [
{
"range": [
{
"introduced": "1.9.0"
},
{
"fixed": "1.9.1"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"range": [
{
"introduced": "0"
},
{
"fixed": "1.8.1"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"range": [
{
"fixed": "58742312117cc671e6e9c694c2f5f9f669c17136"
}
],
"source": "REFERENCES_COMMIT"
},
{
"range": [
{
"fixed": "9104e581cff3d047ace5e179bfae86807a44be1f"
}
],
"source": "REFERENCES_COMMIT"
},
{
"range": [
{
"fixed": "fea67b2cd73a5a85115c325d504303ec7382e133"
}
],
"source": "REFERENCES_COMMIT"
},
{
"original_tag": "v1.8.1",
"range": [
{
"fixed": "7c0920fe16adc497efae82881ac0f1e4d7ac98d0"
}
],
"source": "REFERENCES_TAG"
},
{
"original_tag": "v1.9.1",
"range": [
{
"fixed": "1f7a0811da5128db40fd7b868ae0aac0c581f91f"
}
],
"source": "REFERENCES_TAG"
}
]
}