CVE-2026-59172
Joker Arbitrary Code Execution
Description
## 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).
INFO
Published Date :
Sept. 9, 2026, 11:48 p.m.
Last Modified :
Sept. 9, 2026, 11:48 p.m.
Remotely Exploit :
No
Source :
github-security-advisories
Affected Products
The following products are affected by CVE-2026-59172
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | github |
Solution
- Update Joker to version 1.8.2 or later.
- Avoid linting untrusted repositories via automation.
- Disable project-local linter files if unable to update.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-59172.
| URL | Resource |
|---|---|
| https://github.com/candid82/joker/security/advisories/GHSA-m835-3cm9-rggg | |
| https://github.com/advisories/GHSA-m835-3cm9-rggg |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-59172 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-59172
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-59172 vulnerability anywhere in the article.