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CVE-2026-75517— Novu: Cross-Environment Integration Manipulation (IDOR)

Quick assessment

Affected
novuhq novu
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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 b

CVSS 6.5 · Medium

Affected Version Matrix 2

VendorProduct Version RangeStatus
@novu api-service < 3.18.0 affected
novuhq novu < 3.18.0 affected
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I. Basic Information for CVE-2026-75517

Vulnerability Information

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Vulnerability Title
Novu: Cross-Environment Integration Manipulation (IDOR)
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
novuhq novu < 3.18.0 -
@novu api-service < 3.18.0 -

II. Public POCs for CVE-2026-75517

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III. Intelligence Information for CVE-2026-75517

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Patches & Fixes for CVE-2026-75517 (2)

Other References for CVE-2026-75517 (2)

Same Patch Batch · novuhq · 2026-09-22 · 3 CVEs total

CVE-2026-75511 5.3 MEDIUM Novu: Server-Side Request Forgery (SSRF) via Chat Provider Webhook URLs
CVE-2026-75510 5.1 MEDIUM Novu: Stored XSS in In-App Inbox via notification redirect.url javascript: scheme

IV. Related Vulnerabilities

Same product: novu
Same vendor: novuhq
Same weakness: CWE-639

V. Comments for CVE-2026-75517

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