CVE-2026-59172 Joker linter executed project-local .jokerd/linter.* files during linting
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2026-59172?
CVE-2026-59172 is a high-severity vulnerability in candid82 joker, published on 28 Oct 2026.
Official description
Joker is a small Clojure interpreter, linter and formatter written in Go. Prior to 1.8.2, `joker --lint <file>` walks upward from the linted file to locate a `.jokerd/` directory and executes matching `linter.*` files before linting. Those files contain executable Joker/Clojure code, so linting a file inside an untrusted repository can execute repository-supplied code with the linter user's privileges. Editor integrations and CI jobs that automatically lint checked-out source can trigger this behavior. The patch stops executing project-local linter customizations and loads executable customization only from the user's home directory. This issue is fixed in version 1.8.2.
Weakness: CWE-829
Which versions are affected by CVE-2026-59172?
3 open source packages ship an affected version, including github.com/candid82/joker.
| Package | Affected | Fixed in |
|---|---|---|
github.com/candid82/joker Go | All versions | 1.8.2 |
github.com/candid82/joker Go | All versions | 1.8.2 |
github.com/candid82/joker Go | All versions | 1.8.2 |
How do I fix CVE-2026-59172?
Upgrade github.com/candid82/joker to 1.8.2 or later.
Is CVE-2026-59172 being exploited?
There is no known exploitation of CVE-2026-59172 in the wild and no public exploit code.
Sources
Also known as GHSA-m835-3cm9-rggg, GO-2026-6450.