# CVE-2026-125115: @novu/application-generic: `validateUrlSsrf` permits CGNAT (100.64.0.0/10) destinations — affects Workflow HTTP request step + Webhook filter condition


- **Severity:** Medium 6.8 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Fix available:** Yes
- **Published:** 9 Nov 2026
- **Updated:** 10 Nov 2026
- **Also known as:** GHSA-vg6v-j97m-h5xq

## What is CVE-2026-125115?

CVE-2026-125115 is a medium-severity vulnerability in @novu application-generic, published on 9 Nov 2026. 

### Official 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.

Weakness: CWE-918 (Server-Side Request Forgery)

## Which versions are affected by CVE-2026-125115?

1 open source package ship an affected version, including @novu/application-generic.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `@novu/application-generic` | npm | All versions | 3.17.0 |

## How do I fix CVE-2026-125115?

Upgrade @novu/application-generic to 3.17.0 or later.

## Is CVE-2026-125115 being exploited?

There is no known exploitation of CVE-2026-125115 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-125115 and fix it if it is affected.

What it is: CVE-2026-125115 is a medium-severity vulnerability in @novu application-generic, published on 9 Nov 2026. 
Exploitation: There is no known exploitation of CVE-2026-125115 in the wild and no public exploit code.

Affected packages and fixed versions:
- @novu/application-generic (npm): affected all versions; fixed in 3.17.0

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-125115/ (Markdown: https://insights.sbomify.com/CVE-2026-125115/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-125115
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-125115
- OSV: https://osv.dev/vulnerability/CVE-2026-125115

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-125115/
Summaries are generated and may contain mistakes; the official description above is the record.