CoreWCF: SAML token replay protection is inoperative
Impact
When enabling DetectReplayedTokens, a token can be replayed and will be detected despite it being reused.
Patches
Fixed in CoreWCF v1.8.1 and v1.9.1
Workarounds
Provide your own implementation of ITokenReplayCache with the correct behavior.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| .NET (NuGet) | CoreWCF.Primitives | < 1.8.1, >= 1.9.0, < 1.9.1 | 1.8.1, 1.9.1 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N- Weakness (CWE)
CWE-294, CWE-613- Platform
- .NET (NuGet)
- Package
CoreWCF.Primitives- Disclosed
- 19.06.2026
- Updated
- 11.10.2026 11:23
Sources and licenses
OSV / GitHub Advisory Database - GHSA-9jr3-rj99-8jq3 - CC BY 4.0
Vulnerability history: CoreWCF.Primitives
All published vulnerabilities of this package (.NET (NuGet)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 8
- First → latest
- 06.2026 06.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 1
- High 4
- Medium 2
- Low 1
Disclosures per year
- 2026: 8
-
CoreWCF: SAML token replay protection is inoperative this entry
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