# CVE-2024-45843: Weak SSRF Filtering

> Attackers can exploit weak SSRF filtering in Mattermost deployed on Oracle Cloud or Alibaba to access internal metadata endpoints.

- **Severity:** Low 3.1 (`CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 26 Sep 2024
- **Updated:** 26 Sep 2024
- **Also known as:** BIT-mattermost-2024-45843, GHSA-w37h-c34c-gwjm

## What is CVE-2024-45843?

CVE-2024-45843 is a low-severity server-side request forgery vulnerability in Mattermost Mattermost Server, published on 26 Sep 2024. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Mattermost versions 9.5.x <= 9.5.8 fail to include the metadata endpoints of Oracle Cloud and Alibaba in the SSRF denylist, which allows an attacker to possibly cause an SSRF if Mattermost was deployed in Oracle Cloud or Alibaba.

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

## Which versions are affected by CVE-2024-45843?

1 open source package ship an affected version, including mattermost. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `mattermost` | Bitnami | From 9.5.0 | 9.5.9 |

Products: Mattermost Mattermost Server.

## How do I fix CVE-2024-45843?

Upgrade mattermost to 9.5.9 or later.

## Is CVE-2024-45843 being exploited?

There is no known exploitation of CVE-2024-45843 in the wild and no public exploit code.

## Other vulnerabilities in Mattermost Mattermost Server

- [CVE-2025-12419](https://insights.sbomify.com/CVE-2025-12419/): Account takeover on OAuth/OpenID-enabled servers (critical 9.9)
- [CVE-2025-12421](https://insights.sbomify.com/CVE-2025-12421/): Account Takeover via Code Exchange Endpoint (critical 9.9)
- [CVE-2025-4981](https://insights.sbomify.com/CVE-2025-4981/): Path Traversal Leading to RCE by Any Authenticated Mattermost User (critical 9.9)
- [CVE-2025-20051](https://insights.sbomify.com/CVE-2025-20051/): Arbitrary file read via block duplication in Mattermost Boards (critical 9.9)
- [CVE-2025-25279](https://insights.sbomify.com/CVE-2025-25279/): Arbitrary file read in Mattermost Boards via import & export board archive (critical 9.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-45843 and fix it if it is affected.

What it is: CVE-2024-45843 is a low-severity server-side request forgery vulnerability in Mattermost Mattermost Server, published on 26 Sep 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-45843 in the wild and no public exploit code.

Affected packages and fixed versions:
- mattermost (Bitnami): affected from 9.5.0; fixed in 9.5.9

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-2024-45843/ (Markdown: https://insights.sbomify.com/CVE-2024-45843/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-45843
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-45843
- OSV: https://osv.dev/vulnerability/CVE-2024-45843

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-45843/
Summaries are generated and may contain mistakes; the official description above is the record.