CVE-2026-59172High· 7.8▾ TwilightJoker linter executed project-local .jokerd/linter.* files during linting
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 42.9 · likelihood 0 · exploitation 0
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Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via OSV
Last analysed / modified upstream
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.
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.
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.
Reported by Younghun Ko of AhnLab (@koyokr).
github.com/candid82/joker < 1.8.2Upgrade to a patched release:
github.com/candid82/joker 1.8.2Connected by shared product, vendor, weakness, or advisory.
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