CVE-2026-57956 SigNoz CVE debrief

Who should care

Users of SigNoz version prior to 0.133.0 should be aware of this vulnerability and take immediate action to upgrade to the patched version. Security teams and administrators responsible for monitoring and protecting against vulnerabilities in their organization's systems should also be aware of this issue. Additionally, operators and platform administrators who manage SigNoz deployments should review the affected scope and take necessary actions to protect their systems.

Technical summary

The vulnerability exists in SigNoz versions prior to 0.133.0, where the alert rule store predicates fail to filter by organization ID. This allows authenticated users to access other organizations' alert rules by supplying a target rule UUID. The missing tenant isolation check enables attackers to bypass multi-tenant access controls and read, edit, and delete alert rules belonging to other organizations. The CVE record was published on 2026-06-29T18:16:40.963Z and has not been modified since then.

Defensive priority

High

Recommended defensive actions

• Upgrade SigNoz to version 0.133.0 or later
• Review and update access controls to ensure proper tenant isolation
• Monitor for suspicious activity related to alert rule access
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record was published on 2026-06-29T18:16:40.963Z and has not been modified since then. The NVD entry is currently Deferred. There is limited information available about the vulnerability, and defenders should verify the affected scope and severity with the vendor. SigNoz versions prior to 0.133.0 are affected, and users should take immediate action to upgrade to the patched version.

Official resources