CVE-2026-75511

Novu provides an API for sending notifications through multiple channels. Prior to 3.18.0, Novu accepts chat webhook URLs from subscriber credentials.webhookUrl, channel endpoint endpoint.url, event payload.webhookUrl, and event overrides.webhookUrl, then passes the selected endpoint.url through send-message-chat.usecase.ts to raw HTTP requests in the Slack, Discord, Mattermost, Microsoft Teams, Grafana On-Call, Ryver, Rocket.Chat, GetStream, and Zulip providers. An authenticated user can supply an internal or otherwise restricted destination because these paths do not apply normalizeOutboundHttpUrl, assertSafeOutboundUrl, or the DNS-pinned safeOutboundJsonRequest protection used by the generic webhook providers. The Novu worker can consequently issue attacker-directed POST requests to internal network services and cause interactions or actions supported by those services. This issue is fixed in version 3.18.0.

CVSS

No CVSS.

References

Link	Resource
https://github.com/novuhq/novu/commit/dabfd66457c0b98ad46a8186e69f74f570a990c2
https://github.com/novuhq/novu/pull/11455
https://github.com/novuhq/novu/releases/tag/v3.18.0
https://github.com/novuhq/novu/security/advisories/GHSA-pg9q-8v57-hqph

Configurations

No configuration.

History

22 Sep 2026, 16:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-22 16:17

Updated : 2026-09-26 00:16

NVD link : CVE-2026-75511

Mitre link : CVE-2026-75511

CVE.ORG link : CVE-2026-75511

JSON object : View

Products Affected

No product.

CWE

CWE-918

Server-Side Request Forgery (SSRF)

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