CVE-2026-75517 Novu: Cross-Environment Integration Manipulation (IDOR)
Attackers can manipulate integrations across environments by bypassing environment checks, allowing unauthorized modification or deletion of notification settings.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-75517?
CVE-2026-75517 is a medium-severity missing authorization vulnerability in @novu api-service, published on 22 Sep 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
Novu provides an API for sending notifications through multiple channels. Prior to 3.18.0, Novu integration mutation use cases including remove-integration, update-integration, auto-configure-integration, and set-integration-as-primary look up an integration by integrationId and organizationId without consistently enforcing environmentId. A caller with access to one environment in an organization can target an integration identifier from another environment and delete the integration, modify its credentials, change the primary provider, or trigger auto-configuration. The repository advisory defines both environment API keys and dashboard sessions as affected. The 3.18.0 change enforces the environment boundary only for environment-scoped API-key authentication, while its tests intentionally retain cross-environment dashboard-session behavior, so it does not completely remediate the advisory-defined scope. Version 3.18.0 is a partial fix attempt, and the dashboard-session behavior requires curator resolution.
Weakness: CWE-639
Which versions are affected by CVE-2026-75517?
How do I fix CVE-2026-75517?
No fix has been published for CVE-2026-75517 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-75517 being exploited?
There is no known exploitation of CVE-2026-75517 in the wild and no public exploit code.
Sources
Also known as GHSA-jh6r-hjhp-wh2h.