Novu provides an API for sending notifications through multiple channels. Prior to 3.17.0, validateUrlSsrf in libs/application-generic/src/utils/ssrf-url-validation.ts uses the isPrivateIp deny-list without covering the RFC6598 100.64.0.0/10 shared address space or its IPv4-mapped IPv6 forms. The workflow HTTP request step and webhook filter condition can therefore send server-side requests when a configured literal address or resolved hostname falls in that range. In Alibaba Cloud, 100.100.100.200 may expose instance metadata, while self-hosted and multi-tenant deployments may expose provider-internal services, private infrastructure, service meshes, or VPN resources reachable through CGNAT addressing. This issue is fixed in version 3.17.0.
Metrics
Affected Vendors & Products
References
History
Thu, 12 Nov 2026 20:30:00 +0000
| Type | Values Removed | Values Added |
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| First Time appeared |
Novu
Novu application-generic Novu novu |
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| Vendors & Products |
Novu
Novu application-generic Novu novu |
Thu, 12 Nov 2026 01:30:00 +0000
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| Metrics |
ssvc
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Mon, 09 Nov 2026 22:30:00 +0000
| Type | Values Removed | Values Added |
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| Description | Novu provides an API for sending notifications through multiple channels. Prior to 3.17.0, validateUrlSsrf in libs/application-generic/src/utils/ssrf-url-validation.ts uses the isPrivateIp deny-list without covering the RFC6598 100.64.0.0/10 shared address space or its IPv4-mapped IPv6 forms. The workflow HTTP request step and webhook filter condition can therefore send server-side requests when a configured literal address or resolved hostname falls in that range. In Alibaba Cloud, 100.100.100.200 may expose instance metadata, while self-hosted and multi-tenant deployments may expose provider-internal services, private infrastructure, service meshes, or VPN resources reachable through CGNAT addressing. This issue is fixed in version 3.17.0. | |
| Title | Novu: `validateUrlSsrf` permits CGNAT (100.64.0.0/10) destinations — affects Workflow HTTP request step + Webhook filter condition | |
| Weaknesses | CWE-918 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-11-09T22:16:35.104Z
Updated: 2026-11-10T19:06:56.547Z
Reserved: 2026-11-09T17:45:35.936Z
Link: CVE-2026-125115
Updated: 2026-11-10T18:18:38.711Z
Status : Deferred
Published: 2026-11-09T23:17:21.760
Modified: 2026-11-12T22:18:51.470
Link: CVE-2026-125115
No data.