# CVE-2002-0270: Cross-site scripting in n/a

> Remote attackers can execute arbitrary script in Opera when MIME type detection is disabled, bypassing text/plain XSS protections.

- **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:** No
- **Published:** 3 May 2002
- **Updated:** 8 Aug 2024
- **Also known as:** GHSA-hhx3-jx8c-hf8v

## What is CVE-2002-0270?

CVE-2002-0270 is a medium-severity cross-site scripting vulnerability in n/a, published on 3 May 2002. 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, when configured with the "Determine action by MIME type" option disabled, interprets an object as an HTML document even when its MIME Content-Type is text/plain, which could allow remote attackers to execute arbitrary script in documents that the user does not expect, possibly through web applications that use a text/plain type to prevent cross-site scripting attacks.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2002-0270?

It affects 1 product.


Products: Opera Software Opera Web Browser.

## How do I fix CVE-2002-0270?

No fix has been published for CVE-2002-0270 yet. Limit exposure of the affected software until one is available.

## Is CVE-2002-0270 being exploited?

There is no known exploitation of CVE-2002-0270 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2002-0783](https://insights.sbomify.com/CVE-2002-0783/): Cross-site scripting in n/a (high 7.5)
- [CVE-2002-0243](https://insights.sbomify.com/CVE-2002-0243/): Cross-site scripting in n/a (high 7.5)
- [CVE-2002-2332](https://insights.sbomify.com/CVE-2002-2332/): Denial of service in n/a (medium 5.0)
- [CVE-2001-1491](https://insights.sbomify.com/CVE-2001-1491/): Denial of service in n/a (medium 5.0)
- [CVE-2002-0898](https://insights.sbomify.com/CVE-2002-0898/): File upload in n/a (medium 5.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2002-0270 and fix it if it is affected.

What it is: CVE-2002-0270 is a medium-severity cross-site scripting vulnerability in n/a, published on 3 May 2002. 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-2002-0270 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-2002-0270/ (Markdown: https://insights.sbomify.com/CVE-2002-0270/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2002-0270
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2002-0270
- OSV: https://osv.dev/vulnerability/CVE-2002-0270

---
From sbomify Insights: https://insights.sbomify.com/CVE-2002-0270/
Summaries are generated and may contain mistakes; the official description above is the record.