# CVE-2023-27159: Appwrite Server-Side Request Forgery vulnerability

> Attackers can exploit an SSRF vulnerability in Appwrite's favicon endpoint to access internal network resources and sensitive information.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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:** 31 Mar 2023
- **Updated:** 9 Jul 2026
- **Also known as:** GHSA-hxgx-584x-vwm8

## What is CVE-2023-27159?

CVE-2023-27159 is a high-severity server-side request forgery vulnerability in n/a, published on 31 Mar 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Appwrite up to v1.2.1 was discovered to contain a Server-Side Request Forgery (SSRF) via the component /v1/avatars/favicon. This vulnerability allows attackers to access network resources and sensitive information via a crafted GET request.

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

## Which versions are affected by CVE-2023-27159?

2 open source packages ship an affected version, including appwrite/server-ce. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `appwrite/server-ce` | Packagist | All versions to 1.2.1 | None |
| `appwrite/server-ce` | Packagist | All versions to 1.2.1 | None |

Products: Appwrite Appwrite.

## How do I fix CVE-2023-27159?

No fix has been published for CVE-2023-27159 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-27159 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-27159 exists.

Public exploit code:

- Appwrite <=1.2.1 - Server-Side Request Forgery (nuclei): http/cves/2023/CVE-2023-27159.yaml

## Other vulnerabilities in n/a

- [CVE-2022-2925](https://insights.sbomify.com/CVE-2022-2925/): Cross-site Scripting (XSS) - Stored in appwrite/appwrite (critical 9.0)
- [CVE-2022-25377](https://insights.sbomify.com/CVE-2022-25377/): Appwrite Directory Traversal vulnerability (high 7.5)
- [CVE-2021-23682](https://insights.sbomify.com/CVE-2021-23682/): Prototype Pollution (high 7.3)
- [CVE-2024-1063](https://insights.sbomify.com/CVE-2024-1063/): Server-side request forgery in Appwrite (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-27159 and fix it if it is affected.

What it is: CVE-2023-27159 is a high-severity server-side request forgery vulnerability in n/a, published on 31 Mar 2023. 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-2023-27159 exists.

Affected packages and fixed versions:
- appwrite/server-ce (Packagist): affected all versions up to 1.2.1; no fix listed
- appwrite/server-ce (Packagist): affected all versions up to 1.2.1; 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-2023-27159/ (Markdown: https://insights.sbomify.com/CVE-2023-27159/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-27159
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-27159
- OSV: https://osv.dev/vulnerability/CVE-2023-27159

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-27159/
Summaries are generated and may contain mistakes; the official description above is the record.