CVE-2026-85219Network attack vectorHinoki check available

Service interruption via unbounded Redis request buffering

Published Sep 21, 2026 · Updated Sep 21, 2026

Resource exhaustion in Thinkst Applied Research OpenCanary before 0.9.10 allows remote attackers to interrupt service through its Redis module. RedisProtocol.dataReceived retains incomplete unauthenticated requests in a per-connection buffer without size, connection-count, or idle-time limits. The Redis module must be enabled and network-reachable; sustained partial requests exhaust process memory and interrupt the honeypot.

CVSS severity3.7
Low
EPSS probability0.41%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Resource exhaustion in Thinkst Applied Research OpenCanary before 0.9.10 allows remote attackers to interrupt service through its Redis module. RedisProtocol.dataReceived retains incomplete unauthenticated requests in a per-connection buffer without size, connection-count, or idle-time limits. The Redis module must be enabled and network-reachable; sustained partial requests exhaust process memory and interrupt the honeypot.

The record

CVE
CVE-2026-85219
Published
Sep 21, 2026
Updated
Sep 21, 2026
Vendor
Thinkst Applied Research
Product
OpenCanary
Classifications
CWE-770, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 21, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.4 <0.9.10

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Thinkst Applied Research · OpenCanaryversion=0.4 <0.9.10

Published CVSS scores

3.7Thinkst Applied ResearchCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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