Thinkst Applied Research Canary up to 5.11.1 Redis service denial of service

Summaryinfo

A vulnerability was found in Thinkst Applied Research Canary up to 5.11.1. It has been rated as critical. The impacted element is an unknown function of the component Redis service. The manipulation leads to denial of service. This vulnerability is uniquely identified as CVE-2026-85220. The attack is possible to be carried out remotely. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Thinkst Applied Research Canary up to 5.11.1. This issue affects an unknown function of the component Redis service. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability. The summary by CVE is:

A vulnerability in the Thinkst Canary honeypot Redis service allows an unauthenticated remote attacker to execute a Denial-of-Service attack against the honeypot. The vulnerability is accessible when the Redis service is enabled only. The Canary is NOT affected if the Redis service is disabled. Thinkst has addressed this issue on all supported platforms. New update files to address this issue are available on all platforms except Docker. For Docker customers, a new Docker image has been published which includes the patch. Customers with automatic updates enabled already have updates in distribution. If automatic updates are disabled, customers are advised to update their Canaries. Workarounds are available for customers unable to update at this time.

It is possible to read the advisory at canary.tools. The identification of this vulnerability is CVE-2026-85220 since 09/03/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

Upgrading to version 5.1.2, 5.2.2, 5.3.2, 5.4.2, 5.5.2, 5.6.4, 5.7.2, 5.8.2, 5.9.2, 5.10.2 or 5.11.2 eliminates this vulnerability.

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Productinfo

Vendor

• Thinkst Applied Research

Name

• Canary

Version

• 5.1.0
• 5.1.1
• 5.2.0
• 5.2.1
• 5.3.0
• 5.3.1
• 5.4.0
• 5.4.1
• 5.5.0
• 5.5.1
• 5.6.0
• 5.6.1
• 5.6.2
• 5.6.3
• 5.7.0
• 5.7.1
• 5.8.0
• 5.8.1
• 5.9.0
• 5.9.1
• 5.10.0
• 5.10.1
• 5.11.0
• 5.11.1

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

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