# CVE-2023-4939: SALESmanago <= 3.2.4 - Log Injection via Weak Authentication Token

> Unauthenticated attackers can inject arbitrary content into log files due to weak authentication tokens in the SALESmanago WordPress plugin.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 21 Oct 2023
- **Updated:** 8 Apr 2026
- **Also known as:** GHSA-2mxq-q8p2-g2c8

## What is CVE-2023-4939?

CVE-2023-4939 is a medium-severity vulnerability in salesmanag0 SALESmanago & Leadoo, published on 21 Oct 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The SALESmanago plugin for WordPress is vulnerable to Log Injection in versions up to, and including, 3.2.4. This is due to the use of a weak authentication token for the /wp-json/salesmanago/v1/callbackApiV3 API endpoint which is simply a SHA1 hash of the site URL and client ID found in the page source of the website. This makes it possible for unauthenticated attackers to inject arbitrary content into the log files, and when combined with another vulnerability this could have significant consequences.

Weakness: CWE-287 (Improper Authentication), CWE-305 (Authentication Bypass by Primary Weakness)

## Which versions are affected by CVE-2023-4939?

It affects 1 product.


Products: Salesmanago Salesmanago.

## How do I fix CVE-2023-4939?

No fix has been published for CVE-2023-4939 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-4939 being exploited?

There is no known exploitation of CVE-2023-4939 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-4939 and fix it if it is affected.

What it is: CVE-2023-4939 is a medium-severity vulnerability in salesmanag0 SALESmanago & Leadoo, published on 21 Oct 2023. 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-2023-4939 in the wild and no public exploit code.

Affected product: salesmanag0 SALESmanago & Leadoo. 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-2023-4939/ (Markdown: https://insights.sbomify.com/CVE-2023-4939/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-4939
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-4939
- OSV: https://osv.dev/vulnerability/CVE-2023-4939

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-4939/
Summaries are generated and may contain mistakes; the official description above is the record.