# CVE-2009-4071: Cross-site scripting in n/a

> Remote attackers can steal sensitive information or execute scripts via XSS when Opera's exception stacktraces are enabled.

- **Severity:** Medium 5.8 (`AV:N/AC:M/Au:N/C:P/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:** No
- **Published:** 24 Nov 2009
- **Updated:** 7 Aug 2024
- **Also known as:** GHSA-f383-hh72-jgh8

## What is CVE-2009-4071?

CVE-2009-4071 is a medium-severity cross-site scripting vulnerability in Opera Opera Browser, published on 24 Nov 2009. 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 10.10, when exception stacktraces are enabled, places scripting error messages from a web site into variables that can be read by a different web site, which allows remote attackers to obtain sensitive information or conduct cross-site scripting (XSS) attacks via unspecified vectors.

Weakness: CWE-16

## Which versions are affected by CVE-2009-4071?

It affects 1 product.


Products: Opera Opera Browser.

## How do I fix CVE-2009-4071?

No fix has been published for CVE-2009-4071 yet. Limit exposure of the affected software until one is available.

## Is CVE-2009-4071 being exploited?

There is no known exploitation of CVE-2009-4071 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-2009-4071 and fix it if it is affected.

What it is: CVE-2009-4071 is a medium-severity cross-site scripting vulnerability in Opera Opera Browser, published on 24 Nov 2009. 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-2009-4071 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-2009-4071/ (Markdown: https://insights.sbomify.com/CVE-2009-4071/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2009-4071
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2009-4071
- OSV: https://osv.dev/vulnerability/CVE-2009-4071

---
From sbomify Insights: https://insights.sbomify.com/CVE-2009-4071/
Summaries are generated and may contain mistakes; the official description above is the record.