# CVE-2023-35948: Novu Open Redirect Vulnerability in Sign-In with GitHub Functionality

> Attackers can redirect users to malicious URLs via GitHub sign-in, potentially leading to account takeover in Novu deployments.

- **Severity:** Medium 5.4 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 6 Jul 2023
- **Updated:** 18 Oct 2024
- **Also known as:** GHSA-xxv3-m43w-gv79

## What is CVE-2023-35948?

CVE-2023-35948 is a medium-severity vulnerability in novuhq novu, published on 6 Jul 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

Novu provides an API for sending notifications through multiple channels. Versions prior to 0.16.0 contain an open redirect vulnerability in the "Sign In with GitHub" functionality of Novu's open-source repository. It could have allowed an attacker to force a victim into opening a malicious URL and thus, potentially log into the repository under the victim's account gaining full control of the account. This vulnerability only affected the Novu Cloud and Open-Source deployments if the user manually enabled the GitHub OAuth on their self-hosted instance of Novu. Users should upgrade to version 0.16.0 to receive a patch.

Weakness: CWE-601 (URL Redirection to Untrusted Site)

## Which versions are affected by CVE-2023-35948?

It affects 1 product.


Products: Novu Novu.

## How do I fix CVE-2023-35948?

No fix has been published for CVE-2023-35948 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-35948 being exploited?

There is no known exploitation of CVE-2023-35948 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-35948 and fix it if it is affected.

What it is: CVE-2023-35948 is a medium-severity vulnerability in novuhq novu, published on 6 Jul 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2023-35948 in the wild and no public exploit code.

Affected product: novuhq novu. No package-level version data is available, so check the vendor advisory linked from the reference page.

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-2023-35948/ (Markdown: https://insights.sbomify.com/CVE-2023-35948/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-35948
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-35948
- OSV: https://osv.dev/vulnerability/CVE-2023-35948

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-35948/
Summaries are generated and may contain mistakes; the official description above is the record.