# CVE-2022-0451: Auth bypass in Dark SDK

> Attackers can steal sensitive authorization headers via cross-origin redirects in the Dart SDK HTTP client, exposing credentials to malicious sites.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/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:** No
- **Published:** 18 Feb 2022
- **Updated:** 21 Apr 2025

## What is CVE-2022-0451?

CVE-2022-0451 is a medium-severity vulnerability in Google LLC Dart SDK, published on 18 Feb 2022. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Dart SDK contains the HTTPClient in dart:io library whcih includes authorization headers when handling cross origin redirects. These headers may be explicitly set and contain sensitive information. By default, HttpClient handles redirection logic. If a request is sent to example.com with authorization header and it redirects to an attackers site, they might not expect attacker site to receive authorization header. We recommend updating the Dart SDK to version 2.16.0 or beyond.

Weakness: CWE-863 (Incorrect Authorization), CWE-305 (Authentication Bypass by Primary Weakness)

## Which versions are affected by CVE-2022-0451?

It affects 1 product.


Products: Dart Dart Software Development Kit.

## How do I fix CVE-2022-0451?

No fix has been published for CVE-2022-0451 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-0451 being exploited?

There is no known exploitation of CVE-2022-0451 in the wild and no public exploit code.

## Other vulnerabilities in Google LLC Dart SDK

- [CVE-2022-3095](https://insights.sbomify.com/CVE-2022-3095/): Incorrect parsing of the backslash characters in Dart library (critical 9.8)
- [CVE-2021-22568](https://insights.sbomify.com/CVE-2021-22568/): Dart - Publishing to third-party package repositories may expose pub.dev credentials (high 8.8)
- [CVE-2026-27704](https://insights.sbomify.com/CVE-2026-27704/): Dart SDK and Flutter SDK have Zip slip in Dart Pub package extraction (medium 6.6)
- [CVE-2021-22540](https://insights.sbomify.com/CVE-2021-22540/): XSS in Dart SDK (medium 6.1)
- [CVE-2020-8923](https://insights.sbomify.com/CVE-2020-8923/): XSS in Dart (medium 5.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-0451 and fix it if it is affected.

What it is: CVE-2022-0451 is a medium-severity vulnerability in Google LLC Dart SDK, published on 18 Feb 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-2022-0451 in the wild and no public exploit code.

Affected product: Google LLC Dart SDK. 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-2022-0451/ (Markdown: https://insights.sbomify.com/CVE-2022-0451/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-0451
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-0451
- OSV: https://osv.dev/vulnerability/CVE-2022-0451

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-0451/
Summaries are generated and may contain mistakes; the official description above is the record.