# CVE-2023-51837: Ylianst MeshCentral Missing SSL Certificate Validation

> An attacker can bypass SSL certificate validation in MeshCentral, potentially enabling man-in-the-middle attacks against the 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:** 30 Jan 2024
- **Updated:** 29 May 2025
- **Also known as:** GHSA-8xw6-9h78-c89j

## What is CVE-2023-51837?

CVE-2023-51837 is a critical vulnerability in n/a, published on 30 Jan 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Ylianst MeshCentral 1.1.16 is vulnerable to Missing SSL Certificate Validation.

Weakness: CWE-295 (Improper Certificate Validation)

## Which versions are affected by CVE-2023-51837?

2 open source packages ship an affected version, including meshcentral. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `meshcentral` | npm | All versions to 1.1.16 | None |
| `meshcentral` | npm | All versions to 1.1.16 | None |

Products: Meshcentral Meshcentral.

## How do I fix CVE-2023-51837?

No fix has been published for CVE-2023-51837 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-51837 being exploited?

There is no known exploitation of CVE-2023-51837 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2024-26135](https://insights.sbomify.com/CVE-2024-26135/): MeshCentral cross-site websocket hijacking (CSWSH) vulnerability (high 8.4)
- [CVE-2023-51838](https://insights.sbomify.com/CVE-2023-51838/): Ylianst MeshCentral 1.1.16 suffers from Use of a Broken or Risky Cryptographic Algorithm. (high 7.5)
- [CVE-2023-51842](https://insights.sbomify.com/CVE-2023-51842/): MeshCentral algorithm-downgrade issue (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-51837 and fix it if it is affected.

What it is: CVE-2023-51837 is a critical vulnerability in n/a, published on 30 Jan 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-2023-51837 in the wild and no public exploit code.

Affected packages and fixed versions:
- meshcentral (npm): affected all versions up to 1.1.16; no fix listed
- meshcentral (npm): affected all versions up to 1.1.16; no fix listed

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-2023-51837/ (Markdown: https://insights.sbomify.com/CVE-2023-51837/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-51837
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-51837
- OSV: https://osv.dev/vulnerability/CVE-2023-51837

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-51837/
Summaries are generated and may contain mistakes; the official description above is the record.