# CVE-2022-31033: Authorization header leak in rubygem Mechanize

> An attacker can steal Authorization headers when Mechanize follows redirects to different ports, exposing sensitive credentials.

- **Severity:** Medium 5.9 (`CVSS:3.1/AV:N/AC:H/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:** Yes
- **Published:** 9 Jun 2022
- **Updated:** 23 Apr 2025
- **Also known as:** DEBIAN-CVE-2022-31033, GHSA-64qm-hrgp-pgr9, UBUNTU-CVE-2022-31033

## What is CVE-2022-31033?

CVE-2022-31033 is a medium-severity vulnerability in Fedoraproject Fedora, published on 9 Jun 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The Mechanize library is used for automating interaction with websites. Mechanize automatically stores and sends cookies, follows redirects, and can follow links and submit forms. In versions prior to 2.8.5 the Authorization header is leaked after a redirect to a different port on the same site. Users are advised to upgrade to Mechanize v2.8.5 or later. There are no known workarounds for this issue.

Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2022-31033?

2 open source packages ship an affected version, including mechanize. It affects 2 products.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `mechanize` | RubyGems | All versions | 2.8.5 |
| `mechanize` | RubyGems | All versions | 2.8.5 |

Products: Fedoraproject Fedora, Mechanize Project Mechanize.

## How do I fix CVE-2022-31033?

Upgrade mechanize to 2.8.5 or later.

## Is CVE-2022-31033 being exploited?

There is no known exploitation of CVE-2022-31033 in the wild and no public exploit code.

## Other vulnerabilities in Fedoraproject Fedora

- [CVE-2024-4577](https://insights.sbomify.com/CVE-2024-4577/): PHP-CGI OS Command Injection (critical 9.8, exploited in the wild)
- [CVE-2021-39226](https://insights.sbomify.com/CVE-2021-39226/): Grafana Authentication Bypass (critical 9.8, exploited in the wild)
- [CVE-2019-5544](https://insights.sbomify.com/CVE-2019-5544/): VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow (critical 9.8, exploited in the wild)
- [CVE-2024-4947](https://insights.sbomify.com/CVE-2024-4947/): Google Chromium V8 Type Confusion (critical 9.6, exploited in the wild)
- [CVE-2024-4671](https://insights.sbomify.com/CVE-2024-4671/): Google Chromium Visuals Use-After-Free (critical 9.6, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-31033 and fix it if it is affected.

What it is: CVE-2022-31033 is a medium-severity vulnerability in Fedoraproject Fedora, published on 9 Jun 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-2022-31033 in the wild and no public exploit code.

Affected packages and fixed versions:
- mechanize (RubyGems): affected all versions; fixed in 2.8.5
- mechanize (RubyGems): affected all versions; fixed in 2.8.5

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-2022-31033/ (Markdown: https://insights.sbomify.com/CVE-2022-31033/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-31033
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-31033
- OSV: https://osv.dev/vulnerability/CVE-2022-31033

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-31033/
Summaries are generated and may contain mistakes; the official description above is the record.