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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 提供了一个通过多种渠道发送通知的 API。在 3.18.0 版本之前，Novu 中与集成相关的变更操作（包括删除集成、更新集成、自动配置集成以及设置主集成）在通过 和 查找集成时，未一致地强制执行 检查。这意味着，拥有组织中某一环境访问权限的调用者，可以针对另一环境中的集成标识符执行删除集成、修改其凭据、更改主提供商或触发自动配置等敏感操作。该仓库中的安全公告明确指出，受影响的路径包括基于环境作用域的 API 密钥以及仪表板会话。 3.18.0 版本的修复措施仅对基于环境作用域的 API 密钥认证强制执行

CVSS 6.5 · Medium EPSS 0.70% · P53

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