# CVE-2012-5881: Cross-site scripting in yui 2.4.0

> Remote attackers can inject arbitrary web script or HTML via the Flash component infrastructure in YUI, requiring user interaction to execute.

- **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:** 16 Nov 2012
- **Updated:** 6 Aug 2024
- **Also known as:** CLSA-2026-1773965916, CVE-2012-5475, GHSA-jjg9-mf63-vqrp

## What is CVE-2012-5881?

CVE-2012-5881 is a medium-severity cross-site scripting vulnerability in n/a, published on 16 Nov 2012. 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

Cross-site scripting (XSS) vulnerability in the Flash component infrastructure in YUI 2.4.0 through 2.9.0 allows remote attackers to inject arbitrary web script or HTML via vectors related to charts.swf, a similar issue to CVE-2010-4207.

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

## Which versions are affected by CVE-2012-5881?

2 open source packages ship an affected version, including yui2. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `yui2` | npm | From 2.4.0 to 2.9.0 | None |
| `yui2` | npm | From 2.4.0 to 2.9.0 | None |

Products: Yahoo Yui.

## How do I fix CVE-2012-5881?

Upgrade to a fixed version.

## Is CVE-2012-5881 being exploited?

There is no known exploitation of CVE-2012-5881 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2013-6780](https://insights.sbomify.com/CVE-2013-6780/): Cross-site scripting in n/a (medium 4.3)
- [CVE-2012-5882](https://insights.sbomify.com/CVE-2012-5882/): Cross-site scripting in n/a (medium 4.3)
- [CVE-2010-4710](https://insights.sbomify.com/CVE-2010-4710/): Cross-site scripting in n/a (medium 4.3)
- [CVE-2010-4207](https://insights.sbomify.com/CVE-2010-4207/): Cross-site scripting in n/a (medium 4.3)
- [CVE-2010-4208](https://insights.sbomify.com/CVE-2010-4208/): Cross-site scripting in n/a (medium 4.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2012-5881 and fix it if it is affected.

What it is: CVE-2012-5881 is a medium-severity cross-site scripting vulnerability in n/a, published on 16 Nov 2012. 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-2012-5881 in the wild and no public exploit code.

Affected packages and fixed versions:
- yui2 (npm): affected from 2.4.0 up to 2.9.0; no fix listed
- yui2 (npm): affected from 2.4.0 up to 2.9.0; no fix listed

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-2012-5881/ (Markdown: https://insights.sbomify.com/CVE-2012-5881/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2012-5881
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2012-5881
- OSV: https://osv.dev/vulnerability/CVE-2012-5881

---
From sbomify Insights: https://insights.sbomify.com/CVE-2012-5881/
Summaries are generated and may contain mistakes; the official description above is the record.