CVE-2026-78155 Untrusted Search Path in StackGres

Critical 9.9 Published Updated

A low-privilege tenant can escalate to administrator privileges in the StackGres operator due to an untrusted search path vulnerability.

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-2026-78155?

CVE-2026-78155 is a critical vulnerability in OnGres StackGres, published on 23 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

privilege escalation in StackGres operator allows a low-privilege tenant who owns a database to gain administrator privileges

Weakness: CWE-426

Which versions are affected by CVE-2026-78155?

It affects 1 product.

Products include Ongres Stackgres.

How do I fix CVE-2026-78155?

No fix has been published for CVE-2026-78155 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-78155 being exploited?

There is no known exploitation of CVE-2026-78155 in the wild and no public exploit code.

Sources

Also known as GHSA-gf36-c938-gjrw.

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