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Vulnerability record · CVE-2026-92717 · published 16 September 2026

CVE-2026-92717: Missing authentication for critical function vulnerability

Covenant through 0.6 registers the CovenantHub SignalR hub without an Authorize attribute, allowing unauthenticated callers to invoke CreateHttpListener and receive a signed JWT token. Attackers can use the obtained token to authenticate against the entire operator API and access grunts, credentials, binaries, events, and the operator roster.

9.3 CVSS 4.0 Critical EPSS 0.50% · top 60.0% CWE-306 · Missing authentication for critical function Deferred
9.3CVSS 4.0 base score
0.50%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
6References
23 Sep 2026Last modified by NVD

Description

Covenant through 0.6 registers the CovenantHub SignalR hub without an Authorize attribute, allowing unauthenticated callers to invoke CreateHttpListener and receive a signed JWT token. Attackers can use the obtained token to authenticate against the entire operator API and access grunts, credentials, binaries, events, and the operator roster.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/cobbr/Covenant
https://github.com/cobbr/Covenant/blob/v0.6/Covenant/Core/CovenantService.cs#L3958-L3975
https://github.com/cobbr/Covenant/blob/v0.6/Covenant/Hubs/CovenantHub.cs#L28-L33
https://github.com/cobbr/Covenant/issues/406
https://www.vulncheck.com/advisories/covenant-through-0.6-missing-authentication-on-the-covenanthub-signalr-hub
https://github.com/cobbr/Covenant/issues/406

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Source: NIST National Vulnerability Database (record CVE-2026-92717), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.