https://seclists.org/oss-sec/2026/q4/91: [OSSN-0109] Cross-project metric association bypass in Gnocchi

Q: Which Gnocchi releases require attention?

Affected releases are Gnocchi versions earlier than 4.6.6 and version 4.7.0.

Q: What does an attacker need to exploit this issue?

The attacker needs an authenticated Gnocchi user account and a target resource UUID. The UUID may be known already or obtainable through enumeration.

Q: What cross-project impact is possible?

An attacker can create a metric associated with another project's resource through POST /v1/metric by supplying resource_id in the request body. This can allow injection of arbitrary measures affecting Aodh alarms and Heat scaling policies, potentially causing changes to OpenStack resources in the target project.

Published Oct 7, 2026

Updated

Affected Software

1 affected component

Openstack Gnocchi<4.6.6, =4.7.0

Frequently Asked Questions

Which Gnocchi releases require attention?

Affected releases are Gnocchi versions earlier than 4.6.6 and version 4.7.0.

What does an attacker need to exploit this issue?

The attacker needs an authenticated Gnocchi user account and a target resource UUID. The UUID may be known already or obtainable through enumeration.

What cross-project impact is possible?

An attacker can create a metric associated with another project's resource through POST /v1/metric by supplying resource_id in the request body. This can allow injection of arbitrary measures affecting Aodh alarms and Heat scaling policies, potentially causing changes to OpenStack resources in the target project.