GHSA-4v55-cpmv-3vcm

Source

https://github.com/advisories/GHSA-4v55-cpmv-3vcm

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-4v55-cpmv-3vcm/GHSA-4v55-cpmv-3vcm.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-4v55-cpmv-3vcm

Aliases

CVE-2026-54780

Published

2026-06-19T20:47:04Z

Modified

2026-06-19T21:00:18.130062916Z

Severity

3.7 (Low) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N CVSS Calculator

Summary

CoreWCF: WS-Security Reference DigestMethod Algorithm-Suite Bypass

Details

Impact

CoreWCF’s WS-Security 1.0 receive pipeline validates the SignatureMethod of an incoming ds:SignedInfo against the configured SecurityAlgorithmSuite, but does not validate the DigestMethod declared on each ds:Reference. As a result, a sender can populate ds:SignedInfo with SignatureMethod values the suite accepts (for example rsa-sha256 under Basic256Sha256) while declaring a per-reference DigestMethod the suite rejects (for example http://www.w3.org/2000/09/xmldsig#sha1). The signature is then verified where it permits SHA-1 digests, and the message is accepted.

Patches

Fixed in CoreWCF v1.8.1 and v1.9.1

Workarounds

None

Database specific

{
    "nvd_published_at": null,
    "github_reviewed_at": "2026-06-19T20:47:04Z",
    "github_reviewed": true,
    "severity": "LOW",
    "cwe_ids": [
        "CWE-327",
        "CWE-757"
    ]
}

References

Affected packages

NuGet / CoreWCF.Primitives

Package

Name: CoreWCF.Primitives; View open source insights on deps.dev
Purl: pkg:nuget/CoreWCF.Primitives

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.8.1

Affected versions

0.*

0.1.0-preview

0.1.0-preview-2

0.1.0

0.2.0

0.2.1

0.3.0

0.3.1

0.3.2

0.4.0

1.*

1.0.0-preview1

1.0.0-preview2

1.0.0

1.0.1

1.0.2

1.1.0

1.1.1

1.2.0

1.2.1

1.3.0

1.3.1

1.3.2

1.4.0-preview1

1.4.0

1.4.1

1.4.2

1.5.0-preview1

1.5.0

1.5.1

1.5.2

1.6.0

1.7.0

1.8.0

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-4v55-cpmv-3vcm/GHSA-4v55-cpmv-3vcm.json"