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VulnerabilityPublished

CVE-2026-75517: novuhq novu · Insecure Direct Object Reference

Affects novuhq novuSource CVE Database V5

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Not known to be exploited · CVSS 6.5 Medium : upgrade to 3.18.0 when convenient.

Data as of 5 Nov 2026, 23:24 UTC

CVSS 3.1 base score
6.5Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.7% chance of exploitation in 30 days – higher than 53% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 3.18.0
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 22 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.

What to do

Upgrade novu and api-service and novuhq/novu to 3.18.0.

Affected software

ProductAffectedFixed in
novuhqnovuAffected
  • <3.18.0
Fixed in
  • 3.18.0
@novuapi-serviceAffected
  • <3.18.0
Fixed in
  • 3.18.0
GitHubnovuhq/novupkg:github/novuhq/novuOther threatsAffected
  • <3.18.0
Fixed in
  • 3.18.0

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Version 3.18.0 of Novu partially mitigates this vulnerability by enforcing environment boundaries for environment-scoped API key authentication. However, dashboard session access still allows cross-environment manipulation and requires further vendor resolution. Patch status beyond 3.18.0 is not confirmed; check the vendor advisory for current remediation guidance.

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.

References

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