CVE-2026-86540
knowns versions before 0.30.0 fail to validate the settings.lsp.languages binary field in project configuration files, allowing attackers to execute arbitrary binaries by crafting a malicious .knowns/config.json file. When a repository with a crafted configuration is opened, the unvalidated binary path is executed twice under the user's account without any verification.
Scoring
- Severity
- HIGH
- CVSS base score
- 8.5
- CVSS vector
- CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- EPSS probability
- 0.14%
- CWE
- CWE-78
- Published
- 2026-09-07
- Last modified
- 2026-09-08
Affected products
- knowns-dev knowns
- knowns-dev knowns
Weakness type
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