Path Traversal in Knowns-Dev Knowns
CVE-2026-88937
knowns through 0.33.0 fails to properly validate template destination paths in the code generation template engine, allowing attackers to read and write arbitrary files outside the project root. Attackers can supply malicious templates that traverse directories to overwrite shell profiles, steal credentials, or achieve persistent code execution on victim systems.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.007 (50.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 50.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/knowns-dev/knowns/security/advisories/GHSA-68cq-4rwm-f7jr (vendor-advisory)
- github.com/knowns-dev/knowns/security/advisories/GHSA-xjcg-5j3r-m6f9 (vendor-advisory)
- github.com/knowns-dev/knowns/blob/v0.33.0/internal/codegen/template_engine.go (technical-description)
- github.com/knowns-dev/knowns/blob/v0.33.0/internal/codegen/template_engine.go (technical-description)
- www.vulncheck.com/advisories/knowns-through-0.33.0-path-traversal-via-template-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-88937?
- CVE-2026-88937 is a high-severity vulnerability in Knowns-Dev Knowns, classified under Path Traversal. CVSS score: 8.8/10. Published 2026-09-10.
- How severe is CVE-2026-88937?
- High severity. CVSS v3 base score is 8.8 out of 10.