# CVE-2023-46746: Authenticated PostHog users vulnerable to SSRF

> Authenticated users can exploit a Server-Side Request Forgery vulnerability in PostHog webhooks to forge POST requests to internal resources.

- **Severity:** Medium 4.8 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 1 Dec 2023
- **Updated:** 2 Aug 2024
- **Also known as:** GHSA-wqqw-r8c5-j67c

## What is CVE-2023-46746?

CVE-2023-46746 is a medium-severity server-side request forgery vulnerability in posthog, published on 1 Dec 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

PostHog provides open-source product analytics, session recording, feature flagging and A/B testing that you can self-host. A server-side request forgery (SSRF), which can only be exploited by authenticated users, was found in Posthog. Posthog did not verify whether a URL was local when enabling webhooks, allowing authenticated users to forge a POST request. This vulnerability has been addressed in `22bd5942` and will be included in subsequent releases. There are no known workarounds for this vulnerability.

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

## Which versions are affected by CVE-2023-46746?

It affects 1 product.


Products: Posthog Posthog.

## How do I fix CVE-2023-46746?

No fix has been published for CVE-2023-46746 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-46746 being exploited?

There is no known exploitation of CVE-2023-46746 in the wild and no public exploit code.

## Other vulnerabilities in posthog

- [CVE-2025-1520](https://insights.sbomify.com/CVE-2025-1520/): PostHog ClickHouse Table Functions SQL Injection Remote Code Execution Vulnerability (high 7.1)
- [CVE-2025-1521](https://insights.sbomify.com/CVE-2025-1521/): PostHog slack_incoming_webhook Server-Side Request Forgery Information Disclosure Vulnerability (high 7.1)
- [CVE-2025-1522](https://insights.sbomify.com/CVE-2025-1522/): PostHog database_schema Server-Side Request Forgery Information Disclosure Vulnerability (high 7.1)
- [CVE-2024-9710](https://insights.sbomify.com/CVE-2024-9710/): PostHog database_schema Server-Side Request Forgery Information Disclosure Vulnerability (high 7.1)
- [CVE-2022-0645](https://insights.sbomify.com/CVE-2022-0645/): Open redirect vulnerability via endpoint authorize_and_redirect/?redirect= in posthog/posthog (medium 6.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-46746 and fix it if it is affected.

What it is: CVE-2023-46746 is a medium-severity server-side request forgery vulnerability in posthog, published on 1 Dec 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2023-46746 in the wild and no public exploit code.

Affected product: posthog. 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-2023-46746/ (Markdown: https://insights.sbomify.com/CVE-2023-46746/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-46746
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-46746
- OSV: https://osv.dev/vulnerability/CVE-2023-46746

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-46746/
Summaries are generated and may contain mistakes; the official description above is the record.