CVE-2026-61822 pg_partman disable maintenance for all partition sets
An attacker with partman_user access can disrupt automated partition maintenance for all sets by triggering an exception in a low-priority configuration row.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-61822?
CVE-2026-61822 is a medium-severity denial of service vulnerability in pgpartman pg_partman, published on 18 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
pg_partman is a PostgreSQL extension that manages partitioned tables by time or ID. Prior to 5.5.0, run_maintenance() handles exceptions outside the loop that processes rows from part_config, so an exception for one partition set immediately terminates the loop and skips every later set. A role with partman_user access can insert or update a row that reliably fails and assign it a low maintenance_order value so it is processed before legitimate rows. Repeated maintenance ticks then abort before legitimate partition sets are maintained, causing database-wide loss of automated partition maintenance. This issue is fixed in version 5.5.0.
Weakness: CWE-703
Which versions are affected by CVE-2026-61822?
How do I fix CVE-2026-61822?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-61822 being exploited?
There is no known exploitation of CVE-2026-61822 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-61822, ECHO-ae46-a998-e223, GHSA-9m6c-hw23-c6h2, UBUNTU-CVE-2026-61822.