# CVE-2023-5877: affiliate-toolkit < 3.4.3 - Unauthenticated SSRF

> Unauthenticated attackers can exploit an SSRF vulnerability in the affiliate-toolkit WordPress plugin to access internal network resources.

- **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:** 1 Jan 2024
- **Updated:** 3 Jun 2025
- **Also known as:** GHSA-3hh9-m6jx-r3jg

## What is CVE-2023-5877?

CVE-2023-5877 is a critical server-side request forgery vulnerability in Unknown affiliate-toolkit, published on 1 Jan 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The affiliate-toolkit WordPress plugin before 3.4.3 lacks authorization and authentication for requests to it's affiliate-toolkit-starter/tools/atkp_imagereceiver.php endpoint, allowing unauthenticated visitors to make requests to arbitrary URL's, including RFC1918 private addresses, leading to a Server Side Request Forgery (SSRF) issue.

Weakness: CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2023-5877?

It affects 1 product.


Products: Servit Affiliate-Toolkit.

## How do I fix CVE-2023-5877?

No fix has been published for CVE-2023-5877 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-5877 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-5877 exists.

## Other vulnerabilities in Unknown affiliate-toolkit

- [CVE-2023-46086](https://insights.sbomify.com/CVE-2023-46086/): WordPress affiliate-toolkit – WordPress Affiliate Plugin Plugin <= 3.4.3 is vulnerable to Cross Site Scripting (XSS) (high 7.1)
- [CVE-2024-1851](https://insights.sbomify.com/CVE-2024-1851/): affiliate-toolkit – WordPress Affiliate Plugin <= 3.5.4 - Missing Authorization via atkp_create_list (medium 6.3)
- [CVE-2023-23786](https://insights.sbomify.com/CVE-2023-23786/): WordPress affiliate-toolkit – WordPress Affiliate Plugin Plugin <= 3.3.3 is vulnerable to Cross Site Scripting (XSS) (medium 5.9)
- [CVE-2025-46231](https://insights.sbomify.com/CVE-2025-46231/): WordPress affiliate-toolkit plugin <= 3.7.3 - Cross Site Request Forgery (CSRF) Vulnerability (medium 5.4)
- [CVE-2023-45105](https://insights.sbomify.com/CVE-2023-45105/): WordPress affiliate-toolkit – WordPress Affiliate Plugin Plugin <= 3.3.9 is vulnerable to Open Redirection (medium 4.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-5877 and fix it if it is affected.

What it is: CVE-2023-5877 is a critical server-side request forgery vulnerability in Unknown affiliate-toolkit, published on 1 Jan 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-5877 exists.

Affected product: Unknown affiliate-toolkit. 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-2023-5877/ (Markdown: https://insights.sbomify.com/CVE-2023-5877/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-5877
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-5877
- OSV: https://osv.dev/vulnerability/CVE-2023-5877

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From sbomify Insights: https://insights.sbomify.com/CVE-2023-5877/
Summaries are generated and may contain mistakes; the official description above is the record.