# CVE-2010-1766: Memory corruption in n/a

> Remote attackers can cause denial of service or potential code execution in WebKit-based browsers via a malformed WebSocket handshake header.

- **Severity:** High 7.5 (`AV:N/AC:L/Au:N/C:P/I:P/A:P`)
- **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:** No
- **Published:** 22 Jul 2010
- **Updated:** 7 Aug 2024
- **Also known as:** GHSA-6mww-pvfg-4qx6

## What is CVE-2010-1766?

CVE-2010-1766 is a high-severity memory corruption vulnerability in n/a, published on 22 Jul 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

Off-by-one error in the WebSocketHandshake::readServerHandshake function in websockets/WebSocketHandshake.cpp in WebCore in WebKit before r56380, as used in Qt and other products, allows remote websockets servers to cause a denial of service (memory corruption) or possibly have unspecified other impact via an upgrade header that is long and invalid.

Weakness: CWE-189

## Which versions are affected by CVE-2010-1766?

It affects 2 products.


Products: Digia Qt, Webkit Webkit.

## How do I fix CVE-2010-1766?

No fix has been published for CVE-2010-1766 yet. Limit exposure of the affected software until one is available.

## Is CVE-2010-1766 being exploited?

There is no known exploitation of CVE-2010-1766 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2015-1858](https://insights.sbomify.com/CVE-2015-1858/): Memory corruption in n/a (medium 6.8)
- [CVE-2015-1859](https://insights.sbomify.com/CVE-2015-1859/): Memory corruption in n/a (medium 6.8)
- [CVE-2015-1860](https://insights.sbomify.com/CVE-2015-1860/): Memory corruption in n/a (medium 6.8)
- [CVE-2015-0295](https://insights.sbomify.com/CVE-2015-0295/): Denial of service in n/a (medium 5.0)
- [CVE-2013-4549](https://insights.sbomify.com/CVE-2013-4549/): XML external entity in n/a (medium 5.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2010-1766 and fix it if it is affected.

What it is: CVE-2010-1766 is a high-severity memory corruption vulnerability in n/a, published on 22 Jul 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-2010-1766 in the wild and no public exploit code.

Affected product: n/a. 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-2010-1766/ (Markdown: https://insights.sbomify.com/CVE-2010-1766/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2010-1766
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2010-1766
- OSV: https://osv.dev/vulnerability/CVE-2010-1766

---
From sbomify Insights: https://insights.sbomify.com/CVE-2010-1766/
Summaries are generated and may contain mistakes; the official description above is the record.