Cobbr Covenant up to 0.6 SignalR Hub improper authorization

Summaryinfo

A vulnerability identified as critical has been detected in Cobbr Covenant up to 0.6. This affects an unknown function of the component SignalR Hub. This manipulation causes improper authorization. This vulnerability is handled as CVE-2026-92717. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in Cobbr Covenant up to 0.6. It has been declared as critical. Affected by this vulnerability is some unknown functionality of the component SignalR Hub. The manipulation with an unknown input leads to a improper authorization vulnerability. The CWE definition for the vulnerability is CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-92717 since 09/16/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/16/2026). The attack technique deployed by this issue is T1548.002 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• Cobbr

Name

• Covenant

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5
• 0.6

Website

• Product: https://github.com/cobbr/Covenant/

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