# rclone: FTP Command Arguments Permit CRLF Injection When Custom Encoding Preserves Newlines

Advisory record · `GHSA-8c48-q9wj-3w37`

- **Identifiers:** `GHSA-8c48-q9wj-3w37` · `BIT-rclone-2026-71311` · `CVE-2026-71311` · `GO-2026-6187`
- **State:** Confirmed
- **Severity:** CVSS 6.4 Medium
- **Critical:** No
- **Weakness (CWE):** [CWE-93](https://cwe.mitre.org/data/definitions/93.html)
- **Tags:** [Other injection](https://agentprime.io/advisories/tag/injection.md)
- **Published:** 5 Aug 2026
- **Updated:** 10 Sept 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 5 Aug 2026, 20:33 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `github.com/rclone/rclone` (Go): affected `<1.75.0`; fixed in `1.75.0`

## Machine-written summary

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

> Rclone versions before 1.75.0 are vulnerable to FTP command injection when the FTP backend uses a manually configured encoding that leaves carriage return and line feed characters unmasked. An attacker who can create a filename in a lower-trust source that is copied or synced to a more-privileged FTP destination could inject an independent FTP command, such as deleting another path, with the configured account's permissions. The default encoding is not affected; upgrade to rclone 1.75.0 or later.

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

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

- **CISA KEV:** Not listed.
- **EPSS:** 0.0039, the 33rd percentile, on 12 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 14:13 UTC: First seen by agentprime
- 31 Oct 2026, 14:13 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-8c48-q9wj-3w37)

## Sources

- [GitHub Advisory Database: GHSA-8c48-q9wj-3w37](https://github.com/advisories/GHSA-8c48-q9wj-3w37)
- [OSV: GHSA-8c48-q9wj-3w37](https://osv.dev/vulnerability/GHSA-8c48-q9wj-3w37)
- <https://github.com/rclone/rclone/security/advisories/GHSA-8c48-q9wj-3w37>
- <https://github.com/rclone/rclone/commit/1df2b70753286c1dfe8366078cbedfdf7f96472c>
- <https://github.com/rclone/rclone>
- <https://github.com/rclone/rclone/releases/tag/v1.75.0>

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-8c48-q9wj-3w37>, 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-8c48-q9wj-3w37/>. Everything for agents: <https://agentprime.io/llms.txt>.