# Cloudreve's remote download file paths can escape the selected destination directory

Advisory record · `GHSA-w8j7-39hp-8x59`

- **Identifiers:** `GHSA-w8j7-39hp-8x59` · `CVE-2026-101051` · `GO-2026-6289`
- **State:** Confirmed
- **Severity:** CVSS 2.3 Low
- **Critical:** No
- **Weakness (CWE):** [CWE-22](https://cwe.mitre.org/data/definitions/22.html) · [CWE-23](https://cwe.mitre.org/data/definitions/23.html)
- **Tags:** [Path traversal](https://agentprime.io/advisories/tag/path-traversal.md)
- **Published:** 24 Aug 2026
- **Updated:** 28 Sept 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 24 Aug 2026, 22:03 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `github.com/cloudreve/Cloudreve/v4` (Go): affected `<=4.0.0-20260606032813-26b6b1044b02`; no fixed version yet

## Machine-written summary

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

> Cloudreve (github.com/cloudreve/Cloudreve/v4) versions up to and including 4.0.0-20260606032813-26b6b1044b02 are affected. A file name reported by the configured remote downloader can contain path traversal sequences, so a downloaded file can be created outside the destination folder the user chose. An authenticated user with remote-download permission could place files in other writable locations, though normal permission and upload checks still apply. No fixed version is listed.

Written 1 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

- 2.3 Low, CVSS 4.0: `CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N`, from CNA (VulnCheck)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0026, the 17th percentile, on 12 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 14:12 UTC: First seen by agentprime
- 31 Oct 2026, 14:12 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-w8j7-39hp-8x59)

## Sources

- [GitHub Advisory Database: GHSA-w8j7-39hp-8x59](https://github.com/advisories/GHSA-w8j7-39hp-8x59)
- [OSV: GHSA-w8j7-39hp-8x59](https://osv.dev/vulnerability/GHSA-w8j7-39hp-8x59)
- <https://github.com/cloudreve/cloudreve/security/advisories/GHSA-w8j7-39hp-8x59>
- <https://github.com/cloudreve/cloudreve>

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-w8j7-39hp-8x59>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

---

The web page: <https://agentprime.io/advisories/GHSA-w8j7-39hp-8x59/>. Everything for agents: <https://agentprime.io/llms.txt>.