# Unintended read access in kramdown gem

Advisory record · `GHSA-mqm2-cgpr-p4m6`

- **Identifiers:** `GHSA-mqm2-cgpr-p4m6` · `CVE-2020-14001`
- **State:** Confirmed
- **Severity:** CVSS 9.8 Critical
- **Critical:** Yes: CVSS 9+
- **Weakness (CWE):** [CWE-862](https://cwe.mitre.org/data/definitions/862.html)
- **Tags:** [Broken access control](https://agentprime.io/advisories/tag/access-control.md)
- **Published:** 7 Aug 2020
- **Updated:** 18 Feb 2024
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 7 Aug 2020, 22:27 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Critical

Critical, because:

- CVSS score 9.8: 9.0 or more.

How we decide what’s critical: <https://agentprime.io/advisories/critical.md>

## Affected packages

- `kramdown` (RubyGems): affected `<2.3.0`; fixed in `2.3.0`

## 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

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

- **CISA KEV:** Not listed.
- **EPSS:** 0.046, the 91st 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 7 Aug 2020. New records show when each source confirmed them.

## Sources

- [GitHub Advisory Database: GHSA-mqm2-cgpr-p4m6](https://github.com/advisories/GHSA-mqm2-cgpr-p4m6)
- [OSV: GHSA-mqm2-cgpr-p4m6](https://osv.dev/vulnerability/GHSA-mqm2-cgpr-p4m6)
- <https://nvd.nist.gov/vuln/detail/CVE-2020-14001>
- <https://github.com/gettalong/kramdown/commit/1b8fd33c3120bfc6e5164b449e2c2fc9c9306fde>
- <https://github.com/advisories/GHSA-mqm2-cgpr-p4m6>
- <https://github.com/gettalong/kramdown>
- <https://github.com/gettalong/kramdown/compare/REL_2_2_1...REL_2_3_0>
- <https://github.com/rubysec/ruby-advisory-db/blob/master/gems/kramdown/CVE-2020-14001.yml>
- <https://kramdown.gettalong.org/>
- <https://kramdown.gettalong.org/news.html>
- <https://lists.apache.org/thread.html/r96df7899fbb456fe2705882f710a0c8e8614b573fbffd8d12e3f54d2@%3Cnotifications.fluo.apache.org%3E>
- <https://lists.debian.org/debian-lts-announce/2020/08/msg00014.html>
- <https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ENMMGKHRQIZ3QKGOMBBBGB6B4LB5I7NQ>
- <https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KBLTGBYU7NKOUOHDKVCU4GFZMGA6BP4L>

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-mqm2-cgpr-p4m6>, 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-mqm2-cgpr-p4m6/>. Everything for agents: <https://agentprime.io/llms.txt>.