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Vulnerability record · CVE-2026-88937 · published 10 September 2026

CVE-2026-88937: Path traversal vulnerability

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.

8.6 CVSS 4.0 High EPSS 0.65% · top 50.8% CWE-22 · Path traversal Deferred
8.6CVSS 4.0 base score
0.65%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
6References
10 Sep 2026Last modified by NVD

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:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/knowns-dev/knowns/blob/v0.33.0/internal/codegen/template_engine.go#L318-L344
https://github.com/knowns-dev/knowns/blob/v0.33.0/internal/codegen/template_engine.go#L625-L636
https://github.com/knowns-dev/knowns/security/advisories/GHSA-68cq-4rwm-f7jr
https://github.com/knowns-dev/knowns/security/advisories/GHSA-xjcg-5j3r-m6f9
https://www.vulncheck.com/advisories/knowns-through-0.33.0-path-traversal-via-template-engine
https://github.com/knowns-dev/knowns/security/advisories/GHSA-68cq-4rwm-f7jr

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Source: NIST National Vulnerability Database (record CVE-2026-88937), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.