Wish has SCP Path Traversal that allows arbitrary file read/write

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

9.6 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

EPSS

• CVE-2026-41589: 0.39% estimated exploitation activity in the next 30 days; percentile 33.56 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Summary The SCP middleware in charm.land/wish/v2 is vulnerable to path traversal attacks. A malicious SCP client can read arbitrary files from the server, write arbitrary files to the server, and create directories outside the configured root directory by sending crafted filenames containing ../ sequences over the SCP protocol. Affected Versions - charm.land/wish/v2 — all versions through commit 72d67e6 (current main) - github.com/charmbracelet/wish — likely all v1 versions (same code pattern) Details Root Cause The fileSystemHandler.prefixed() method in scp/filesystem.go:42-48 is intended to confine all file operations to a configured root directory. However, it fails to validate that the resolved path remains within the root: When path contains ../ components, filepath.Clean resolves them but does not reject them. The subsequent filepath.Join(h.root, path) produces a path that escapes the root directory. Attack Vector 1: Arbitrary File Write (scp -t) When receiving files from a…

Published by the source

18 Apr 2026, 01:09 UTC

Last modified by the source

8 May 2026, 21:47 UTC

Source last checked

26 Oct 2026, 15:20 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-xjvp-7243-rg9h

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# Patch Next advisory brief: CVE-2026-41589

Advisory: Wish has SCP Path Traversal that allows arbitrary file read/write
IDs: CVE-2026-41589, GHSA-xjvp-7243-rg9h
Record: https://patchnext.com/advisories/cve-2026-41589 (revision 1, source checked 26 Oct 2026, 15:20 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Critical (CVSS 9.6)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Partial vendor fix; fixed versions by package: charm.land/wish/v2 2.0.1. A vendor fix does not mean a deployment is fixed.

## Affected components
- Go charm.land/wish/v2: affected < 2.0.1; fixed in 2.0.1
- Go github.com/charmbracelet/wish: affected <= 1.4.7

## Suggested inspection (read-only)
- Go charm.land/wish/v2: check the installed version with your package manager.
- Go github.com/charmbracelet/wish: check the installed version with your package manager.

## Supported action
No complete vendor fix is recorded. Follow the primary source's mitigation guidance and check this record again before closing anything.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on charm.land/wish/v2, github.com/charmbracelet/wish.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-xjvp-7243-rg9h (GitHub-reviewed advisory GHSA-xjvp-7243-rg9h lists affected ranges: Go charm.land/wish/v2 >=0 =0 <=1.4.7)

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