CVE-2026-88937CWE-22path-traversal

CVE-2026-88937

High · published September 10, 2026

CVSS v3.1
8.8
EPSS
1%
Percentile
50.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
8.6 · 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
EPSS
0.00651 · 50.6th percentile
Weakness
CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Published
2026-09-10T20:18Z
References (6)
https://github.com/knowns-dev/knowns/blob/v0.33.0/internal/codegen/template_engine.go#L318-L344 · [email protected]https://github.com/knowns-dev/knowns/blob/v0.33.0/internal/codegen/template_engine.go#L625-L636 · [email protected]https://github.com/knowns-dev/knowns/security/advisories/GHSA-68cq-4rwm-f7jr · [email protected]https://github.com/knowns-dev/knowns/security/advisories/GHSA-xjcg-5j3r-m6f9 · [email protected]https://www.vulncheck.com/advisories/knowns-through-0.33.0-path-traversal-via-template-engine · [email protected]https://github.com/knowns-dev/knowns/security/advisories/GHSA-68cq-4rwm-f7jr · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 12 SEP 03:22Z
    EPSS moved — → 1%
    epss
  • 10 SEP 15:28Z
    knowns through 0.33.0 Path Traversal via Template Engine
    cvelistv5