CVE-2026-86538
knowns before 0.30.0 Path Traversal via templateFile parameter
CVSS 4.0 8.7 HIGHCVSS 3.1 7.5 HIGHCheck source for fixed versionsKEV status unknown
cve-program · CVE-2026-86538
Publishedknowns versions before 0.30.0 contain a path traversal vulnerability in the POST /api/templates/preview endpoint that allows unauthenticated attackers to read arbitrary files. Attackers can supply directory traversal sequences in the templateFile parameter to bypass path restrictions and read sensitive files like credentials and configuration through the JSON response.
Read the publisher's advisoryAffected versions, risk and source history
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CVE-2026-86538 · CVE overview and exploitation status
cve-program · CVE-2026-86538
- https://github.com/knowns-dev/knowns/security/advisories/GHSA-fpxv-c555-rhm3
- https://github.com/knowns-dev/knowns/blob/v0.29.1/internal/server/routes/templates.go#L299-L310
- https://github.com/knowns-dev/knowns/commit/09c5a96fd5817b941dc86669278c1a17db10ed4e
- https://github.com/knowns-dev/knowns/releases/tag/v0.30.0
- https://www.vulncheck.com/advisories/knowns-before-0.30.0-path-traversal-via-templatefile-parameter
Related changes
Linked by CVE identifierNo related changes are available here.