GHSA-gqv6-pwcg-87r8

Source

https://github.com/advisories/GHSA-gqv6-pwcg-87r8

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-gqv6-pwcg-87r8/GHSA-gqv6-pwcg-87r8.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-gqv6-pwcg-87r8

Aliases

CVE-2026-54783

Published

2026-06-19T20:47:14Z

Modified

2026-06-19T21:00:18.978046078Z

Severity

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

Summary

CoreWCF: XML Signature Wrapping in WS-Security endorsing/supporting signature verification allows replay of captured signed messages

Details

Impact

The attacker, with one captured signed SOAP envelope from a victim and no other privileges, can invoke arbitrary operations on the service as the victim principal for the lifetime of the captured signing key. There is no rate limit on replays. The DetectReplays setting on transport-security bindings does not mitigate the issue because the attack does not reuse the original timestamp — the fresh timestamp in the wsse:Security header is what the replay-detection logic inspects.

Patches

Fixed in CoreWCF v1.8.1 and v1.9.1

Workarounds

Ensure communication is protected by SSL/TLS to prevent capturing of signed SOAP envelope.

Database specific

{
    "github_reviewed": true,
    "github_reviewed_at": "2026-06-19T20:47:14Z",
    "nvd_published_at": null,
    "severity": "HIGH",
    "cwe_ids": [
        "CWE-294",
        "CWE-345",
        "CWE-347"
    ]
}

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-gqv6-pwcg-87r8/GHSA-gqv6-pwcg-87r8.json"