# CVE-2022-39340: OpenFGA Information Disclosure

> Attackers can access sensitive object data via the streamed-list-objects endpoint without valid authorization headers.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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:** Yes
- **Published:** 25 Oct 2022
- **Updated:** 23 Apr 2025
- **Also known as:** GHSA-95x7-mh78-7w2r, GO-2022-1079

## What is CVE-2022-39340?

CVE-2022-39340 is a medium-severity missing authorization vulnerability in openfga, published on 25 Oct 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

OpenFGA is an authorization/permission engine. Prior to version 0.2.4, the `streamed-list-objects` endpoint was not validating the authorization header, resulting in disclosure of objects in the store. Users `openfga/openfga` versions 0.2.3 and prior who are exposing the OpenFGA service to the internet are vulnerable. Version 0.2.4 contains a patch for this issue.

Weakness: CWE-862 (Missing Authorization), CWE-285 (Improper Authorization)

## Which versions are affected by CVE-2022-39340?

3 open source packages ship an affected version, including github.com/openfga/openfga. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `github.com/openfga/openfga` | Go | All versions | 0.2.4 |
| `github.com/openfga/openfga` | Go | All versions | 0.2.4 |
| `github.com/openfga/openfga` | Go | All versions | 0.2.4 |

Products: Openfga Openfga.

## How do I fix CVE-2022-39340?

Upgrade github.com/openfga/openfga to 0.2.4 or later.

## Is CVE-2022-39340 being exploited?

There is no known exploitation of CVE-2022-39340 in the wild and no public exploit code.

## Other vulnerabilities in openfga

- [CVE-2024-31452](https://insights.sbomify.com/CVE-2024-31452/): OpenFGA Authorization Bypass (high 8.1)
- [CVE-2022-23542](https://insights.sbomify.com/CVE-2022-23542/): OpenFGA Authorization Bypass (high 7.7)
- [CVE-2024-42473](https://insights.sbomify.com/CVE-2024-42473/): OpenFGA Authorization Bypass (high 7.5)
- [CVE-2026-40293](https://insights.sbomify.com/CVE-2026-40293/): OpenFGA Playground Preshared Key Exposure (medium 6.5)
- [CVE-2023-40579](https://insights.sbomify.com/CVE-2023-40579/): OpenFGA Authorization Bypass (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-39340 and fix it if it is affected.

What it is: CVE-2022-39340 is a medium-severity missing authorization vulnerability in openfga, published on 25 Oct 2022. 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-2022-39340 in the wild and no public exploit code.

Affected packages and fixed versions:
- github.com/openfga/openfga (Go): affected all versions; fixed in 0.2.4
- github.com/openfga/openfga (Go): affected all versions; fixed in 0.2.4
- github.com/openfga/openfga (Go): affected all versions; fixed in 0.2.4

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-2022-39340/ (Markdown: https://insights.sbomify.com/CVE-2022-39340/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-39340
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-39340
- OSV: https://osv.dev/vulnerability/CVE-2022-39340

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-39340/
Summaries are generated and may contain mistakes; the official description above is the record.