# RClone: Unauthenticated operations/fsinfo allows attacker-controlled backend instantiation and local command execution

Advisory record · `GHSA-jfwf-28xr-xw6q`

- **Identifiers:** `GHSA-jfwf-28xr-xw6q` · `BIT-rclone-2026-41179` · `CVE-2026-41179` · `GO-2026-5466`
- **State:** Confirmed
- **Severity:** CVSS 9.2 Critical
- **Critical:** Yes: CVSS 9+
- **Weakness (CWE):** [CWE-78](https://cwe.mitre.org/data/definitions/78.html) · [CWE-94](https://cwe.mitre.org/data/definitions/94.html) · [CWE-306](https://cwe.mitre.org/data/definitions/306.html)
- **Tags:** [Command injection](https://agentprime.io/advisories/tag/command-injection.md) · [Code injection](https://agentprime.io/advisories/tag/code-injection.md) · [Authentication bypass](https://agentprime.io/advisories/tag/auth-bypass.md)
- **Published:** 22 Apr 2026
- **Updated:** 10 Sept 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 22 Apr 2026, 14:45 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Critical

Critical, because:

- CVSS score 9.2: 9.0 or more.

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

## Affected packages

- `github.com/rclone/rclone` (Go): affected `>=1.48.0, <1.73.5`; fixed in `1.73.5`

## 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

- 9.2 Critical, CVSS 4.0: `CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`, from CNA (GitHub_M)

- **CISA KEV:** Not listed.
- **EPSS:** 0.086, the 95th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 23 Apr 2026, 00:16 UTC: [Confirmed by NVD](https://nvd.nist.gov/vuln/detail/CVE-2026-41179)
- 31 Oct 2026, 14:14 UTC: First seen by agentprime
- 31 Oct 2026, 14:14 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-jfwf-28xr-xw6q)

## Sources

- [GitHub Advisory Database: GHSA-jfwf-28xr-xw6q](https://github.com/advisories/GHSA-jfwf-28xr-xw6q)
- [OSV: GHSA-jfwf-28xr-xw6q](https://osv.dev/vulnerability/GHSA-jfwf-28xr-xw6q)
- <https://github.com/rclone/rclone/security/advisories/GHSA-jfwf-28xr-xw6q>
- <https://nvd.nist.gov/vuln/detail/CVE-2026-41179>
- <https://github.com/rclone/rclone/commit/2a9e952b38e03a96bf40c9eb6e8e22199865ee3b>
- <https://github.com/rclone/rclone>
- <https://github.com/rclone/rclone/blob/bf55d5e6d37fd86164a87782191f9e1ffcaafa82/backend/webdav/webdav.go>
- <https://github.com/rclone/rclone/blob/bf55d5e6d37fd86164a87782191f9e1ffcaafa82/fs/operations/rc.go>
- <https://github.com/rclone/rclone/blob/bf55d5e6d37fd86164a87782191f9e1ffcaafa82/fs/rc/cache.go>
- <https://github.com/rclone/rclone/releases/tag/v1.73.5>
- <https://rclone.org/changelog/#v1-73-5-2026-04-19>

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-jfwf-28xr-xw6q>, 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-jfwf-28xr-xw6q/>. Everything for agents: <https://agentprime.io/llms.txt>.