---
id: CVE-2026-59172
aliases:
  - GHSA-m835-3cm9-rggg
  - GO-2026-6450
title: Joker linter executed project-local .jokerd/linter.* files during linting
summary: Joker linter executed project-local .jokerd/linter.* files during linting
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'
vendor: candid82
product: github.com/candid82/joker
ecosystem: go
affected:
  - github.com/candid82/joker < 1.8.2
patched:
  - github.com/candid82/joker 1.8.2
published: '2026-09-09'
updated: '2026-09-17'
sourceUpdated: '2026-09-17T17:41:02.160584664Z'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-m835-3cm9-rggg'
references:
  - url: 'https://github.com/candid82/joker/security/advisories/GHSA-m835-3cm9-rggg'
  - url: 'https://github.com/candid82/joker'
  - url: 'https://github.com/advisories/GHSA-m835-3cm9-rggg'
tags:
  - osv
  - go
  - ghsa
cwe:
  - CWE-829
ingestedAt: '2026-09-10T00:26:24.579Z'
---

## Overview

## Impact

In Joker versions before 1.8.2, `joker --lint <file>` located a `.jokerd/` directory by walking up from the linted file and executed matching `linter.*` files from that directory before linting. Because these files are executable Joker/Clojure code, linting a file inside an untrusted repository could execute code supplied by that repository.

This could be triggered by editor integrations or CI jobs that automatically run `joker --lint` on checked-out source code.

## Patches

Fixed in Joker v1.8.2. Executable linter customization files are now loaded only from the user's home `.jokerd` directory (`~/.jokerd/linter.cljc`, `~/.jokerd/linter.clj`, `~/.jokerd/linter.cljs`, or `~/.jokerd/linter.joke`). Project-local `.jokerd/linter.*` files are no longer executed.

## Workarounds

Users who cannot upgrade should avoid running `joker --lint` on untrusted repositories, especially through editor integrations or unattended CI. Removing or disabling project-local `.jokerd/linter.*` files before linting also avoids the code-execution path.

## Credits

Reported by Younghun Ko of AhnLab (@koyokr).

## Affected packages

- `github.com/candid82/joker < 1.8.2`

## Remediation

Upgrade to a patched release:

- `github.com/candid82/joker 1.8.2`