# open-uri-cached Gem for Ruby Unsafe Temporary File Creation Enables Code Execution

Advisory record · `GHSA-7m2w-9gw7-c3xp`

- **Identifiers:** `GHSA-7m2w-9gw7-c3xp` · `CVE-2015-3649`
- **State:** Confirmed
- **Severity:** CVSS 7.8 High
- **Critical:** No
- **Weakness (CWE):** [CWE-20](https://cwe.mitre.org/data/definitions/20.html)
- **Tags:** [CWE-20](https://agentprime.io/advisories/tag/cwe-20.md)
- **Published:** 13 May 2022
- **Updated:** 20 Feb 2024
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 13 May 2022, 01:13 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `open-uri-cached` (RubyGems): affected `<=1.0.0`; no fixed version yet

## 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

- 7.8 High, CVSS 3.1: `CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`, from GitHub Advisory Database

- **CISA KEV:** Not listed.
- **EPSS:** 0.0039, the 33rd percentile, on 9 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 13 May 2022. New records show when each source confirmed them.

## Sources

- [GitHub Advisory Database: GHSA-7m2w-9gw7-c3xp](https://github.com/advisories/GHSA-7m2w-9gw7-c3xp)
- [OSV: GHSA-7m2w-9gw7-c3xp](https://osv.dev/vulnerability/GHSA-7m2w-9gw7-c3xp)
- <https://nvd.nist.gov/vuln/detail/CVE-2015-3649>
- <https://github.com/tigris/open-uri-cached/issues/8>
- <https://github.com/rubysec/ruby-advisory-db/blob/master/gems/open-uri-cached/CVE-2015-3649.yml>
- <https://github.com/tigris/open-uri-cached>
- <https://github.com/tigris/open-uri-cached/blob/master/lib/open-uri/cached.rb>
- <https://web.archive.org/web/20210119122105/http://www.securityfocus.com/bid/74469>
- <http://seclists.org/oss-sec/2015/q2/373>
- <http://www.benjaminfleischer.com/2013/03/20/yaml-and-security-in-ruby>
- <http://www.openwall.com/lists/oss-security/2015/05/06/2>

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-7m2w-9gw7-c3xp>, 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-7m2w-9gw7-c3xp/>. Everything for agents: <https://agentprime.io/llms.txt>.