# CVE-2026-40489

> Vulnerability.

## Description

editorconfig-core-c  is an EditorConfig core library for use by plugins supporting EditorConfig parsing. Versions up to and including 0.12.10 have a stack-based buffer overflow in ec_glob() that allows an attacker to crash any application using libeditorconfig by providing a specially crafted directory structure and .editorconfig file. This is an incomplete fix for CVE-2023-0341. The pcre_str buffer was protected in 0.12.6 but the adjacent l_pattern[8194] stack buffer received no equivalent protection. On Ubuntu 24.04, FORTIFY_SOURCE converts the overflow to SIGABRT (DoS). Version 0.12.11 contains an updated fix.

## Key facts

- **CVE ID:** CVE-2026-40489
- **Published:** 2026-04-18
- **CWE codes:** CWE-121, CWE-787

## Primary sources

- NIST NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-40489

## Citation

> AI Analytics. CVE-2026-40489. Retrieved 2026-07-12 from https://api.ai-analytics.org/cve/CVE-2026-40489. Derived from NIST NVD. Licensed CC0.

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