# CVE-2010-1206: Security feature bypass in n/a

> Remote attackers can bypass Same Origin Policy to conduct spoofing attacks via specific HTTP status codes or window.stop calls in Firefox and SeaMonkey.

- **Severity:** Medium 4.3 (`AV:N/AC:M/Au:N/C:N/I:P/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 25 Jun 2010
- **Updated:** 7 Aug 2024
- **Also known as:** GHSA-4qrq-qhhp-x9r2

## What is CVE-2010-1206?

CVE-2010-1206 is a medium-severity vulnerability in Mozilla Firefox, published on 25 Jun 2010. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

The startDocumentLoad function in browser/base/content/browser.js in Mozilla Firefox 3.5.x before 3.5.11 and 3.6.x before 3.6.7, and SeaMonkey before 2.0.6, does not properly implement the Same Origin Policy in certain circumstances related to the about:blank document and a document that is currently loading, which allows (1) remote web servers to conduct spoofing attacks via vectors involving a 204 (aka No Content) status code, and allows (2) remote attackers to conduct spoofing attacks via vectors involving a window.stop call.

Weakness: CWE-264

## Which versions are affected by CVE-2010-1206?

It affects 2 products.


Products: Mozilla Firefox, Mozilla Seamonkey.

## How do I fix CVE-2010-1206?

Upgrade to a fixed version.

## Is CVE-2010-1206 being exploited?

There is no known exploitation of CVE-2010-1206 in the wild and no public exploit code.

## Other vulnerabilities in Mozilla Firefox

- [CVE-2019-11708](https://insights.sbomify.com/CVE-2019-11708/): Mozilla Firefox and Thunderbird Sandbox Escape (critical 10.0, exploited in the wild)
- [CVE-2010-3765](https://insights.sbomify.com/CVE-2010-3765/): Mozilla Multiple Products Remote Code Execution (critical 9.8, exploited in the wild)
- [CVE-2022-26486](https://insights.sbomify.com/CVE-2022-26486/): Mozilla Firefox Use-After-Free (critical 9.6, exploited in the wild)
- [CVE-2022-26485](https://insights.sbomify.com/CVE-2022-26485/): Mozilla Firefox Use-After-Free (high 8.8, exploited in the wild)
- [CVE-2019-11707](https://insights.sbomify.com/CVE-2019-11707/): Mozilla Firefox and Thunderbird Type Confusion (high 8.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2010-1206 and fix it if it is affected.

What it is: CVE-2010-1206 is a medium-severity vulnerability in Mozilla Firefox, published on 25 Jun 2010. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2010-1206 in the wild and no public exploit code.

Affected product: Mozilla Firefox. 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-2010-1206/ (Markdown: https://insights.sbomify.com/CVE-2010-1206/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2010-1206
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2010-1206
- OSV: https://osv.dev/vulnerability/CVE-2010-1206

---
From sbomify Insights: https://insights.sbomify.com/CVE-2010-1206/
Summaries are generated and may contain mistakes; the official description above is the record.