Path Traversal in Knowns-Dev Knowns
CVE-2026-88940
knowns through 0.33.0 fails to validate the path query parameter in the workspace browse endpoint, allowing remote attackers to enumerate arbitrary directories on the host filesystem. Attackers can traverse the directory structure to locate project directories and identify targets for further exploitation.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.006 (46.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 46.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/knowns-dev/knowns/security/advisories/GHSA-h73x-698r-qrvg (vendor-advisory)
- github.com/knowns-dev/knowns/blob/v0.33.0/internal/server/routes/workspace.go (technical-description)
- www.vulncheck.com/advisories/knowns-through-0.33.0-arbitrary-directory-enumerat… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-88940?
- CVE-2026-88940 is a medium-severity vulnerability in Knowns-Dev Knowns, classified under Path Traversal. CVSS score: 5.3/10. Published 2026-09-10.
- How severe is CVE-2026-88940?
- Medium severity. CVSS v3 base score is 5.3 out of 10.