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VulnerabilityPublished

CVE-2026-85219: Thinkst Applied Research OpenCanary · Unthrottled Resource Allocation

Affects Thinkst Applied Research OpenCanarySource CVE Database V5

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Not known to be exploited · CVSS 3.7 Low : upgrade to 0.9.10 when convenient.

Data as of 5 Nov 2026, 23:24 UTC

CVSS 3.1 base score
3.7Low
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 35% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 0.9.10
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 21 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.

What to do

Upgrade OpenCanary and opencanary to 0.9.10.

Affected software

ProductAffectedFixed in
Thinkst Applied ResearchOpenCanaryAffected
  • >=0.4 <0.9.10
Fixed in
  • 0.9.10
PyPIopencanarypkg:pypi/opencanaryOther threatsAffected
  • >=0.4 <0.9.10
Fixed in
  • 0.9.10

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

If you cannot patch yet, consider restricting network access to the Redis module or deploying resource limits at the system level to mitigate potential memory exhaustion.

Description

CVE-2026-85219 is a denial-of-service vulnerability in the Redis module of Thinkst Applied Research's OpenCanary version 0.9.9 and earlier. It allows an unauthenticated remote attacker to cause unconstrained memory usage by allocating resources without limits or throttling. The vulnerability has a low severity rating with a CVSS score of 3.7.

References

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