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CVE-2026-59172 is an arbitrary code execution vulnerability in the github.com/candid82/joker linter. When invoked with linting enabled, Joker loads and executes linter customization code from a repository-local configuration location. Consequently, linting an untrusted repository can execute attacker-controlled code in the context of the Joker process. Joker 1.8.2 changes this behavior so executable linter customizations are loaded only from the user’s home configuration directory.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
High-severity vulnerability (CWE-829) affecting the github.com/candid82/joker Go library and related packages before version 1.8.2. The supplied CVSS v3 score is 7.8 (local attack vector, low complexity, no privileges, user interaction required, high confidentiality, integrity, and availability impact).
An arbitrary code-execution vulnerability in Joker prior to 1.8.2. The `joker --lint` command executed project-local `.jokerd/linter.*` customization files discovered while traversing parent directories, allowing an untrusted repository to supply code executed by editor integrations or CI systems that lint checked-out source.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.