CVE-2026-40452 Missing authorization in Apache IoTDB
Unauthorized authenticated users can access last-value data via the fastLastQuery endpoint due to missing authorization checks.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-40452?
CVE-2026-40452 is a high-severity missing authorization vulnerability in Apache IoTDB, published on 10 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Incorrect Authorization, Improper Access Control vulnerability in Apache IoTDB. Authorization bypass in /rest/v2/fastLastQuery exposes last-value data to unauthorized authenticated users.
This issue affects Apache IoTDB: from 1.3.5 before 1.3.8, from 2.0.5 before 2.0.10.
Users are recommended to upgrade to version 2.0.10, which fixes the issue.
Which versions are affected by CVE-2026-40452?
How do I fix CVE-2026-40452?
No fix has been published for CVE-2026-40452 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-40452 being exploited?
There is no known exploitation of CVE-2026-40452 in the wild and no public exploit code.
Sources
Also known as GHSA-xxj7-h37p-p48c.