# Aqua's archive extraction follows attacker-planted symlinks, allowing writes outside the install directory

Advisory record · `GHSA-mf5c-hw34-4hpp`

- **Identifiers:** `GHSA-mf5c-hw34-4hpp` · `CVE-2026-55569` · `GO-2026-6314`
- **State:** Confirmed
- **Severity:** CVSS 6.6 Medium
- **Critical:** No
- **Weakness (CWE):** [CWE-22](https://cwe.mitre.org/data/definitions/22.html) · [CWE-59](https://cwe.mitre.org/data/definitions/59.html)
- **Tags:** [Path traversal](https://agentprime.io/advisories/tag/path-traversal.md)
- **Published:** 28 Aug 2026
- **Updated:** 2 Sept 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 28 Aug 2026, 16:27 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `github.com/aquaproj/aqua/v2` (Go): affected `<2.60.1`; fixed in `2.60.1`

## Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

> Aqua (github.com/aquaproj/aqua/v2) versions before 2.60.1 are affected. When extracting a tool archive, aqua creates symlinks without checking that their targets stay inside the extraction directory, and a later regular-file entry at the same path follows that symlink. An attacker who supplies a malicious or compromised archive can write content to locations outside the extraction directory, with the privileges of the user running aqua, which could lead to user-level code execution. Upgrade to version 2.60.1 or later.

Written 6 Nov 2026.

## 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

- 6.6 Medium, CVSS 3.1: `CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:L`, from CNA (GitHub_M)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0018, the 7th percentile, on 12 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 14:47 UTC: First seen by agentprime
- 31 Oct 2026, 14:47 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-mf5c-hw34-4hpp)

## Sources

- [GitHub Advisory Database: GHSA-mf5c-hw34-4hpp](https://github.com/advisories/GHSA-mf5c-hw34-4hpp)
- [OSV: GHSA-mf5c-hw34-4hpp](https://osv.dev/vulnerability/GHSA-mf5c-hw34-4hpp)
- <https://github.com/aquaproj/aqua/security/advisories/GHSA-mf5c-hw34-4hpp>
- <https://github.com/aquaproj/aqua/commit/d5b02b220188de376a661b3aabfa912202a1a59a>
- <https://github.com/aquaproj/aqua>
- <https://github.com/aquaproj/aqua/releases/tag/v2.60.1>

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-mf5c-hw34-4hpp>, 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-mf5c-hw34-4hpp/>. Everything for agents: <https://agentprime.io/llms.txt>.