CVE-2026-62355 TDengine: Standard User permission unexpect
A Data Reader admin_user in TDengine Cloud could improperly create UDFs, bypassing read-only restrictions intended for standard users.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-62355?
CVE-2026-62355 is a medium-severity vulnerability in taosdata TDengine, published on 15 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
TDengine is an open source, time-series database optimized for Internet of Things devices. Prior to 3.4.1.15, a Data Reader admin_user on a TDengine Cloud DB instance could run create udf even though standard users should have read-only permissions for non-database objects and show dnodes and create user were denied. This issue is fixed in version 3.4.1.15.
Weakness: CWE-269
Which versions are affected by CVE-2026-62355?
How do I fix CVE-2026-62355?
No fix has been published for CVE-2026-62355 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-62355 being exploited?
There is no known exploitation of CVE-2026-62355 in the wild and no public exploit code.