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.
Analysis
Analysis and contextual insights are available on OpenCVE Cloud.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thinkst Applied Research | Canary | unaffected |
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Vendor Solution
Canary is available across multiple platforms, each with its own version number. The table below shows the first affected and patched versions for all Canary platforms. Platform | First Vulnerable Canary Release | First Fixed Canary Release ------------------+---------------------------------+---------------------------- AWS EC2 | 2.0.2 | 5.3.2 Docker | 3.7.1 | 5.7.2 GCP | 2.2.3 | 5.4.2 Hardware | 1.0 | 5.1.2 Microsoft Azure | 2.2.9 | 5.6.4 Microsoft Hyper-V | 2.3.2 | 5.5.2 Nutanix | 4.9.0 | 5.9.2 OCI | 3.11.10 | 5.11.2 OpenStack | 3.8.9 | 5.8.2 Tailscale | 2.2.1 | 5.3.2 VMware ESXi | 2.0.2 | 5.2.2
Vendor Workaround
* Disable the Redis service
Tracking
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No advisories yet.
| Link | Providers |
|---|---|
| https://canary.tools/security-advisories/tc-2026-01.txt |
|
Mon, 21 Sep 2026 15:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Mon, 21 Sep 2026 13:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| Title | Denial-of-Service in the Thinkst Canary Redis service | |
| Weaknesses | CWE-770 | |
| References |
| |
| Metrics |
cvssV3_1
|
Subscriptions
No data.
MITRE
Status: PUBLISHED
Assigner: ThinkstAppliedResearch
Published:
Updated: 2026-09-21T14:48:17.169Z
Reserved: 2026-09-03T14:08:21.464Z
Link: CVE-2026-85220
Vulnrichment
Updated: 2026-09-21T14:40:18.385Z
NVD
Status : Received
Published: 2026-09-21T14:17:22.007
Modified: 2026-09-21T15:17:32.853
Link: CVE-2026-85220
Redhat
No data.
OpenCVE Enrichment
Updated: 2026-09-21T16:30:11Z
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CWE-770
Allocation of Resources Without Limits or Throttling