CVE-2026-86542
criticalknowns before 0.30.0 fails to validate import names in the import routes, allowing unauthenticated attackers to write files outside the imports directory.
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
9.1 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H Severity source: NVD CVSS v3.1 (disclosure@vulncheck.com)
Timeline (UTC)
Published: 2026-09-07 23:16
Modified: 2026-09-08 19:56
NVD status: Deferred
Last synced 1 day ago
Verified against the source API 2026-10-27 06:51 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/knowns-dev/knowns/blob/v0.29.1/internal/server/routes/imports.go#L376-L... disclosure@vulncheck.com
- https://github.com/knowns-dev/knowns/blob/v0.29.1/internal/server/routes/imports.go#L519-L... disclosure@vulncheck.com
- https://github.com/knowns-dev/knowns/commit/d3989829fb5095666d23d005b2f78a082832a396 disclosure@vulncheck.com
- https://github.com/knowns-dev/knowns/releases/tag/v0.30.0 disclosure@vulncheck.com
- https://github.com/knowns-dev/knowns/security/advisories/GHSA-wh3c-v55g-qfg8 disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/knowns-before-0.30.0-path-traversal-via-import-name disclosure@vulncheck.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 06:51 UTC · record ↗