PatchSiren cyber security CVE debrief
CVE-2026-92717 cobbr CVE debrief
CVE-2026-92717 is a critical vulnerability in Covenant, a tool used for red team operations, through version 0.6. The vulnerability allows unauthenticated callers to invoke CreateHttpListener and receive a signed JWT token due to the CovenantHub SignalR hub being registered without an Authorize attribute. This token can be used to authenticate against the entire operator API, granting access to sensitive information such as grunts, credentials, binaries, events, and the operator roster.
- Vendor
- cobbr
- Product
- Covenant
- CVSS
- CRITICAL 9.3
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-09-16
- Original CVE updated
- 2026-09-21
- Advisory published
- 2026-09-16
- Advisory updated
- 2026-09-21
Who should care
Defenders responsible for red team operations, incident response, and vulnerability management should be aware of this critical vulnerability in Covenant. They should verify their deployments and implement proper authentication mechanisms to prevent unauthorized access.
Why it matters
CVE-2026-92717 is a critical vulnerability in Covenant that allows unauthenticated access to sensitive API endpoints. Defenders should prioritize verifying and implementing proper authentication mechanisms to prevent unauthorized access and potential lateral movement within the network.
- Potential unauthorized access to sensitive information such as grunts, credentials, binaries, events, and the operator roster.
- Possible lateral movement within the network if authentication tokens are compromised.
- Need for verification of authentication mechanisms in Covenant deployments.
- Potential impact on incident response and red team operations due to compromised tools.
Technical summary
The vulnerability is caused by the lack of an Authorize attribute in the CovenantHub SignalR hub, allowing unauthenticated callers to invoke CreateHttpListener and receive a signed JWT token. This token can be used to authenticate against the entire operator API, granting access to sensitive information such as grunts, credentials, binaries, events, and the operator roster. Defenders should prioritize verifying the presence of authentication mechanisms in their Covenant deployments, especially in environments where unauthorized access could lead to significant operational impact. The CVE record and NVD entry provide details on the vulnerability, including its critical CVSS score of 9.3. To mitigate this risk,
Defensive priority
Defenders should prioritize verifying the presence of authentication mechanisms in their Covenant deployments, especially in environments where unauthorized access could lead to significant operational impact.
Recommended defensive actions
- Verify Covenant deployment versions and configurations to ensure authentication is properly implemented.
- Restrict access to sensitive API endpoints and enforce proper authentication mechanisms.
- Monitor for unauthorized access attempts and implement logging and alerting for suspicious activity.
- Apply patches or updates to Covenant as soon as they become available.
- Perform regular security audits to identify potential vulnerabilities.
- Implement additional security measures such as multi-factor authentication and role-based access control.
- Review and update incident response plans to address potential impacts of this vulnerability.
Evidence notes
The CVE record and NVD entry provide details on the vulnerability, including its critical CVSS score of 9.3. The vulnerability is caused by the lack of an Authorize attribute in the CovenantHub SignalR hub, allowing unauthenticated access to sensitive API endpoints.
Sources and references
Verified primary and authoritative sources
-
CVE-2026-92717 CVE Program record
Publisher, destination, and source semantics verified
URL: https://www.cve.org/CVERecord?id=CVE-2026-92717
CVE Program - Official CVE Program record with source-provided CVE metadata.
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CVE-2026-92717 NVD vulnerability detail
Publisher, destination, and source semantics verified
URL: https://nvd.nist.gov/vuln/detail/CVE-2026-92717
NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.
Supplemental references
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Source reference
Unverified legacy reference
URL: https://github.com/cobbr/Covenant
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Source reference
Unverified legacy reference
URL: https://github.com/cobbr/Covenant/blob/v0.6/Covenant/Core/CovenantService.cs
-
Source reference
Unverified legacy reference
URL: https://github.com/cobbr/Covenant/blob/v0.6/Covenant/Hubs/CovenantHub.cs
-
Source reference
Unverified legacy reference
URL: https://github.com/cobbr/Covenant/issues/406
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Source reference
Unverified legacy reference
URL: https://www.vulncheck.com/advisories/covenant-through-0.6-missing-authentication-on-the-covenanthub-signalr-hub
Methodology and review provenance
AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.