# CVE-2023-51665: Audiobookshelf vulnerable to Blind SSRF in `Auth.js`

> Unauthenticated attackers can trigger blind server-side requests in Audiobookshelf, potentially accessing internal resources or bypassing network restrictions.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 27 Dec 2023
- **Updated:** 2 Aug 2024
- **Also known as:** GHSA-gjgj-98v3-47pg

## What is CVE-2023-51665?

CVE-2023-51665 is a medium-severity server-side request forgery vulnerability in advplyr audiobookshelf, published on 27 Dec 2023. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Audiobookshelf is a self-hosted audiobook and podcast server. Prior to 2.7.0, Audiobookshelf is vulnerable to unauthenticated blind server-side request (SSRF) vulnerability in Auth.js. This vulnerability has been addressed in version 2.7.0. There are no known workarounds for this vulnerability.

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

## Which versions are affected by CVE-2023-51665?

It affects 1 product.


Products: Audiobookshelf Audiobookshelf.

## How do I fix CVE-2023-51665?

No fix has been published for CVE-2023-51665 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-51665 being exploited?

There is no known exploitation of CVE-2023-51665 in the wild and no public exploit code.

## Other vulnerabilities in advplyr audiobookshelf

- [CVE-2025-57800](https://insights.sbomify.com/CVE-2025-57800/): Audiobookshelf vulnerable to OIDC token exfiltration and account takeover (high 8.8)
- [CVE-2025-25205](https://insights.sbomify.com/CVE-2025-25205/): Remote Authentication-Bypass can lead to server crash or limited information disclosure due to faulty pattern matching (high 8.2)
- [CVE-2023-47619](https://insights.sbomify.com/CVE-2023-47619/): Audiobookshelf Server-Side Request Forgery and Arbitrary File Read Vulnerability (high 8.1)
- [CVE-2023-47624](https://insights.sbomify.com/CVE-2023-47624/): Audiobookshelf Arbitrary File Read Vulnerability (high 7.5)
- [CVE-2025-46338](https://insights.sbomify.com/CVE-2025-46338/): Audiobookshelf Vulnerable to Cross-Site-Scripting Reflected via POST Request in /api/upload (medium 6.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-51665 and fix it if it is affected.

What it is: CVE-2023-51665 is a medium-severity server-side request forgery vulnerability in advplyr audiobookshelf, published on 27 Dec 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-51665 in the wild and no public exploit code.

Affected product: advplyr audiobookshelf. 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-2023-51665/ (Markdown: https://insights.sbomify.com/CVE-2023-51665/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-51665
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-51665
- OSV: https://osv.dev/vulnerability/CVE-2023-51665

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-51665/
Summaries are generated and may contain mistakes; the official description above is the record.