# Denial of Service Vulnerability in Action View

Advisory record · `GHSA-m63j-wh5w-c252`

- **Identifiers:** `GHSA-m63j-wh5w-c252` · `CVE-2019-5419`
- **State:** Confirmed
- **Severity:** CVSS 7.5 High
- **Critical:** No
- **Weakness (CWE):** [CWE-400](https://cwe.mitre.org/data/definitions/400.html) · [CWE-770](https://cwe.mitre.org/data/definitions/770.html)
- **Tags:** [Denial of service](https://agentprime.io/advisories/tag/dos.md)
- **Published:** 13 Mar 2019
- **Updated:** 16 Feb 2024
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 13 Mar 2019, 17:25 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `actionview` (RubyGems): affected `>=4.0.0, <4.2.11.1 || >=5.2.0, <5.2.2.1 || >=5.1.0, <5.1.6.2 || >=5.0.0, <5.0.7.2 || >=6.0.0.beta1, <6.0.0.beta3`; fixed in `4.2.11.1`, `5.2.2.1`, `5.1.6.2`, `5.0.7.2`, `6.0.0.beta3`

## 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

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

- **CISA KEV:** Not listed.
- **EPSS:** 0.084, the 95th percentile, on 10 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 Mar 2019. New records show when each source confirmed them.

## Sources

- [GitHub Advisory Database: GHSA-m63j-wh5w-c252](https://github.com/advisories/GHSA-m63j-wh5w-c252)
- [OSV: GHSA-m63j-wh5w-c252](https://osv.dev/vulnerability/GHSA-m63j-wh5w-c252)
- <https://nvd.nist.gov/vuln/detail/CVE-2019-5419>
- <https://github.com/rails/rails/pull/35708>
- <https://github.com/rails/rails/commit/f4c70c2222180b8d9d924f00af0c7fd632e26715>
- <https://access.redhat.com/errata/RHSA-2019:0796>
- <https://access.redhat.com/errata/RHSA-2019:1147>
- <https://access.redhat.com/errata/RHSA-2019:1149>
- <https://access.redhat.com/errata/RHSA-2019:1289>
- <https://github.com/rails/rails>
- <https://github.com/rubysec/ruby-advisory-db/blob/master/gems/actionview/CVE-2019-5419.yml>
- <https://groups.google.com/forum/#!topic/rubyonrails-security/GN7w9fFAQeI>
- <https://lists.debian.org/debian-lts-announce/2019/03/msg00042.html>
- <https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Y43636TH4D6T46IC6N2RQVJTRFJAAYGA>

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-m63j-wh5w-c252>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

---

The web page: <https://agentprime.io/advisories/GHSA-m63j-wh5w-c252/>. Everything for agents: <https://agentprime.io/llms.txt>.