# CVE-2008-4200: Cross-site scripting in n/a

> Remote attackers can execute web scripts by spoofing news feed URLs in Opera, requiring user interaction to view the malicious feed.

- **Severity:** Medium 6.4 (`AV:N/AC:L/Au:N/C:N/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:** 27 Sep 2008
- **Updated:** 7 Aug 2024
- **Also known as:** GHSA-g7gq-8xmf-48g9

## What is CVE-2008-4200?

CVE-2008-4200 is a medium-severity cross-site scripting vulnerability in Opera Opera Browser, published on 27 Sep 2008. 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

Opera before 9.52 does not ensure that the address field of a news feed represents the feed's actual URL, which allows remote attackers to change this field to display the URL of a page containing web script controlled by the attacker.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2008-4200?

It affects 1 product.


Products: Opera Opera Browser.

## How do I fix CVE-2008-4200?

No fix has been published for CVE-2008-4200 yet. Limit exposure of the affected software until one is available.

## Is CVE-2008-4200 being exploited?

There is no known exploitation of CVE-2008-4200 in the wild and no public exploit code.

## Other vulnerabilities in Opera Opera Browser

- [CVE-2013-3211](https://insights.sbomify.com/CVE-2013-3211/): Unspecified vulnerability in Opera before 12.15 has unknown impact and attack vectors, related to a "moderately severe issue." (critical 10.0)
- [CVE-2012-4145](https://insights.sbomify.com/CVE-2012-4145/): Other in n/a (critical 10.0)
- [CVE-2012-3559](https://insights.sbomify.com/CVE-2012-3559/): Other in n/a (critical 10.0)
- [CVE-2012-3561](https://insights.sbomify.com/CVE-2012-3561/): Memory corruption in n/a (critical 10.0)
- [CVE-2011-4683](https://insights.sbomify.com/CVE-2011-4683/): Unspecified vulnerability in Opera before 11.60 has unknown impact and attack vectors, related to a "moderately severe issue." (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2008-4200 and fix it if it is affected.

What it is: CVE-2008-4200 is a medium-severity cross-site scripting vulnerability in Opera Opera Browser, published on 27 Sep 2008. 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-2008-4200 in the wild and no public exploit code.

Affected product: Opera Opera Browser. 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-2008-4200/ (Markdown: https://insights.sbomify.com/CVE-2008-4200/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2008-4200
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2008-4200
- OSV: https://osv.dev/vulnerability/CVE-2008-4200

---
From sbomify Insights: https://insights.sbomify.com/CVE-2008-4200/
Summaries are generated and may contain mistakes; the official description above is the record.