GHSA-jgvr-6x5w-hx5w

Source

https://github.com/advisories/GHSA-jgvr-6x5w-hx5w

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-jgvr-6x5w-hx5w/GHSA-jgvr-6x5w-hx5w.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-jgvr-6x5w-hx5w

Published

2026-08-20T18:34:05Z

Modified

2026-08-20T18:45:14Z

Severity

6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N CVSS Calculator

Summary

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

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.

Database specific

{
    "cwe_ids":  [
        "CWE-770"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-08-20T18:34:05Z",
    "nvd_published_at":  null,
    "severity":  "MODERATE"
}

References

Affected packages

PyPI / zoo-kcl

Package

Name: zoo-kcl; View open source insights on deps.dev
Purl: pkg:pypi/zoo-kcl

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

0.3.129

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-jgvr-6x5w-hx5w/GHSA-jgvr-6x5w-hx5w.json"

crates.io / kcl-lib

Package

Name: kcl-lib; View open source insights on deps.dev
Purl: pkg:cargo/kcl-lib

Affected ranges

Type: SEMVER
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

0.3.129

Database specific

last_known_affected_version_range

"< 0.2.129"

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-jgvr-6x5w-hx5w/GHSA-jgvr-6x5w-hx5w.json"