# CVE-2022-3959: drogon Session Hash small space of random values

> The drogon web framework uses a small space of random values for session hashes, potentially allowing attackers to bypass session security mechanisms.

- **Severity:** Low 3.1 (`CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 11 Nov 2022
- **Updated:** 15 Apr 2025
- **Also known as:** GHSA-jx25-8rr2-353v

## What is CVE-2022-3959?

CVE-2022-3959 is a low-severity vulnerability in unspecified drogon, published on 11 Nov 2022. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability, which was classified as problematic, has been found in drogon up to 1.8.1. Affected by this issue is some unknown functionality of the component Session Hash Handler. The manipulation leads to small space of random values. The attack may be launched remotely. Upgrading to version 1.8.2 is able to address this issue. The name of the patch is c0d48da99f66aaada17bcd28b07741cac8697647. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-213464.

Weakness: CWE-330 (Use of Insufficiently Random Values)

## Which versions are affected by CVE-2022-3959?

It affects 1 product.


Products: Drogon Drogon.

## How do I fix CVE-2022-3959?

No fix has been published for CVE-2022-3959 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-3959 being exploited?

There is no known exploitation of CVE-2022-3959 in the wild and no public exploit code.

## Other vulnerabilities in unspecified drogon

- [CVE-2022-25297](https://insights.sbomify.com/CVE-2022-25297/): Arbitrary File Write (high 7.5)
- [CVE-2021-35397](https://insights.sbomify.com/CVE-2021-35397/): Path traversal in n/a (high 7.5)
- [CVE-2023-26137](https://insights.sbomify.com/CVE-2023-26137/): Other in drogonframework/drogon (high 7.2)
- [CVE-2023-26138](https://insights.sbomify.com/CVE-2023-26138/): Other in drogonframework/drogon (medium 5.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-3959 and fix it if it is affected.

What it is: CVE-2022-3959 is a low-severity vulnerability in unspecified drogon, published on 11 Nov 2022. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2022-3959 in the wild and no public exploit code.

Affected product: unspecified drogon. 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-2022-3959/ (Markdown: https://insights.sbomify.com/CVE-2022-3959/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-3959
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-3959
- OSV: https://osv.dev/vulnerability/CVE-2022-3959

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-3959/
Summaries are generated and may contain mistakes; the official description above is the record.