medium

GHSA-jgvr-6x5w-hx5w#zoo-kcl

PyPI · zoo-kcl

Summary

Zoo Design Studio: Recursive KCL parsing is vulnerable to denial-of-service

Severity
medium
CWE
CWE-770
Published
2026-08-20
Updated
2026-08-20

Advisory details

Impact

Feeding a KCL program that wraps an expression in deep, unnecessary parentheses triggers the parser’s recursive expression -> unnecessarily_bracketed -> expression path. With enough nesting, the call stack grows until it exceeds the process stack limit, causing a stack overflow.

References

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Sources: CISA KEV (public domain), OSV.dev & GitHub Advisory Database (CC-BY-4.0), FIRST EPSS, NVD/CWE (public domain). Served live from the Stateward advisory database.