CVE-2026-86542knowns before 0.30.0 Path Traversal via Import Name
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No exploitation reported and no EPSS estimate yet.
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knowns before 0.30.0 fails to validate import names in the import routes, allowing unauthenticated attackers to write files outside the imports directory. Attackers can supply traversal sequences in the name parameter to escape the imports directory and overwrite arbitrary files writable by the server process.
- CVSS
- 9.1 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
- Weakness (CWE)
- CWE-22
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Sep 24, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
knowns-dev knowns knowns_dev:knowns (from the name) | before 0.30.0; 0.30.0 not affected | CNA record |
References
- https://github.com/knowns-dev/knowns/security/advisories/GHSA-wh3c-v55g-qfg8vendor-advisory
- https://github.com/knowns-dev/knowns/blob/v0.29.1/internal/server/routes/imports.go#L519-L551technical-description
- https://github.com/knowns-dev/knowns/blob/v0.29.1/internal/server/routes/imports.go#L376-L420technical-description
- https://github.com/knowns-dev/knowns/commit/d3989829fb5095666d23d005b2f78a082832a396patch
- https://github.com/knowns-dev/knowns/releases/tag/v0.30.0release-notes
- https://www.vulncheck.com/advisories/knowns-before-0.30.0-path-traversal-via-import-namethird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.