# Capgo CLI: symlink-following local secret writes enable arbitrary file overwrite + world-readable credentials (0600 missing)

Advisory record · `GHSA-8mpm-q7mh-8fvh`

- **Identifiers:** `GHSA-8mpm-q7mh-8fvh` · `CVE-2026-56236`
- **State:** Confirmed
- **Severity:** CVSS 6.8 Medium
- **Critical:** No
- **Weakness (CWE):** [CWE-59](https://cwe.mitre.org/data/definitions/59.html) · [CWE-276](https://cwe.mitre.org/data/definitions/276.html) · [CWE-377](https://cwe.mitre.org/data/definitions/377.html)
- **Tags:** [Path traversal](https://agentprime.io/advisories/tag/path-traversal.md) · [Broken access control](https://agentprime.io/advisories/tag/access-control.md) · [CWE-377](https://agentprime.io/advisories/tag/cwe-377.md)
- **Published:** 18 Mar 2026
- **Updated:** 8 Jul 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 18 Mar 2026, 16:09 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `@capgo/cli` (npm): affected `<7.84.6`; fixed in `7.84.6`

## 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

- 6.8 Medium, CVSS 4.0: `CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N`, from CNA (VulnCheck)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0018, the 8th percentile, on 5 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 18 Mar 2026. New records show when each source confirmed them.

## Sources

- [GitHub Advisory Database: GHSA-8mpm-q7mh-8fvh](https://github.com/advisories/GHSA-8mpm-q7mh-8fvh)
- [OSV: GHSA-8mpm-q7mh-8fvh](https://osv.dev/vulnerability/GHSA-8mpm-q7mh-8fvh)
- <https://github.com/Cap-go/capgo/security/advisories/GHSA-8mpm-q7mh-8fvh>
- <https://github.com/Cap-go/CLI/commit/b8aa5ccbfad2d7f10f3cdbc00910d4a6aab026b2>
- <https://github.com/Cap-go/capgo>

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-8mpm-q7mh-8fvh>, 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-8mpm-q7mh-8fvh/>. Everything for agents: <https://agentprime.io/llms.txt>.