# CVE-2023-49931: Missing authorization in n/a

> Attackers can execute arbitrary code via unrestricted SQL++ cURL calls to the /diag/eval endpoint in Couchbase Server.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 28 Feb 2024
- **Updated:** 13 Aug 2024
- **Also known as:** GHSA-489r-g239-g94j

## What is CVE-2023-49931?

CVE-2023-49931 is a critical missing authorization vulnerability in Couchbase Couchbase Server, published on 28 Feb 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An issue was discovered in Couchbase Server before 7.2.4. SQL++ cURL calls to /diag/eval are not sufficiently restricted.

Weakness: CWE-284 (Improper Access Control)

## Which versions are affected by CVE-2023-49931?

It affects 1 product.


Products: Couchbase Couchbase Server.

## How do I fix CVE-2023-49931?

No fix has been published for CVE-2023-49931 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-49931 being exploited?

There is no known exploitation of CVE-2023-49931 in the wild and no public exploit code.

## Other vulnerabilities in Couchbase Couchbase Server

- [CVE-2024-0519](https://insights.sbomify.com/CVE-2024-0519/): Google Chromium V8 Out-of-Bounds Memory Access (high 8.8, exploited in the wild)
- [CVE-2023-3079](https://insights.sbomify.com/CVE-2023-3079/): Google Chromium V8 Type Confusion (high 8.8, exploited in the wild)
- [CVE-2023-2033](https://insights.sbomify.com/CVE-2023-2033/): Google Chromium V8 Type Confusion (high 8.8, exploited in the wild)
- [CVE-2023-49930](https://insights.sbomify.com/CVE-2023-49930/): Missing authorization in n/a (critical 9.8)
- [CVE-2021-35943](https://insights.sbomify.com/CVE-2021-35943/): Auth bypass in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-49931 and fix it if it is affected.

What it is: CVE-2023-49931 is a critical missing authorization vulnerability in Couchbase Couchbase Server, published on 28 Feb 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-49931 in the wild and no public exploit code.

Affected product: Couchbase Couchbase Server. 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-2023-49931/ (Markdown: https://insights.sbomify.com/CVE-2023-49931/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-49931
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-49931
- OSV: https://osv.dev/vulnerability/CVE-2023-49931

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-49931/
Summaries are generated and may contain mistakes; the official description above is the record.