High severity · published Sep 10, 2026
CVE-2026-88937
knowns through 0.33.0 Path Traversal via Template Engine
8.8
CVSS
0.7%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 51% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KN
knowns · knowns-dev
through 0.33.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-88937
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-88937
github.com
https://github.com/knowns-dev/knowns/blob/v0.33.0/internal/codegen/template_engine.go#L318-L344
github.com
https://github.com/knowns-dev/knowns/blob/v0.33.0/internal/codegen/template_engine.go#L625-L636
github.com
https://github.com/knowns-dev/knowns/security/advisories/GHSA-68cq-4rwm-f7jr
github.com
https://github.com/knowns-dev/knowns/security/advisories/GHSA-xjcg-5j3r-m6f9
www.vulncheck.com
https://www.vulncheck.com/advisories/knowns-through-0.33.0-path-traversal-via-template-engine
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