# activesupport Cross-site Scripting vulnerability

Advisory record · `GHSA-vxvp-4xwc-jpp6`

- **Identifiers:** `GHSA-vxvp-4xwc-jpp6` · `CVE-2015-3226`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **Weakness (CWE):** [CWE-79](https://cwe.mitre.org/data/definitions/79.html)
- **Tags:** [Cross-site scripting (XSS)](https://agentprime.io/advisories/tag/xss.md)
- **Published:** 24 Oct 2017
- **Updated:** 4 Nov 2025
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 24 Oct 2017, 18:33 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `activesupport` (RubyGems): affected `>=4.1.0, <4.1.11 || >=4.2.0, <4.2.2`; fixed in `4.1.11`, `4.2.2`

## Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

## Severity and exploitation

No source has published a CVSS score for this record yet.

- **CISA KEV:** Not listed.
- **EPSS:** 0.028, the 86th percentile, on 11 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

This record came from the full history of the GitHub Advisory Database, published 24 Oct 2017. New records show when each source confirmed them.

## Sources

- [GitHub Advisory Database: GHSA-vxvp-4xwc-jpp6](https://github.com/advisories/GHSA-vxvp-4xwc-jpp6)
- [OSV: GHSA-vxvp-4xwc-jpp6](https://osv.dev/vulnerability/GHSA-vxvp-4xwc-jpp6)
- <https://nvd.nist.gov/vuln/detail/CVE-2015-3226>
- <https://github.com/rails/rails>
- <https://groups.google.com/forum/message/raw?msg=rubyonrails-security/7VlB_pck3hU/3QZrGIaQW6cJ>
- <https://groups.google.com/g/rubyonrails-core/c/qBUqVlXERag/m/kuH3wQk1kxUJ>
- <https://web.archive.org/web/20200228033946/http://www.securityfocus.com/bid/75231>
- <https://web.archive.org/web/20200517005133/http://www.securitytracker.com/id/1033755>
- <http://openwall.com/lists/oss-security/2015/06/16/17>
- <http://www.debian.org/security/2016/dsa-3464>

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.

## Check whether this affects you

A Match means an installed version is in the affected range above. Most don’t affect the app; agentprime hasn’t analysed this one yet.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), ask your agent to check the project: `check_lockfile` sends a lockfile, `check_packages` a list of installed packages, and both return the Matches and the upgrades that clear them. `get_advisory` returns this record. Setup: <https://agentprime.io/mcp.md>
- In a browser: <https://agentprime.io/check/> reads your lockfile in the browser, never uploading it.
- Whether it touches your code, with file and line: the Claude Code plugin, <https://agentprime.io/plugin.md>
- As JSON: <https://api.agentprime.io/v1/advisories/GHSA-vxvp-4xwc-jpp6>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

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The web page: <https://agentprime.io/advisories/GHSA-vxvp-4xwc-jpp6/>. Everything for agents: <https://agentprime.io/llms.txt>.