Stack-based Buffer Overflow Affecting editorconfig-core package, versions <0.12.1-1.1+deb11u1ubuntu0.1~esm1


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.19% (8th percentile)

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  • Snyk IDSNYK-UBUNTU2004-EDITORCONFIGCORE-16112238
  • published3 Jun 2026
  • disclosed18 Apr 2026

Introduced: 18 Apr 2026

CVE-2026-40489  (opens in a new tab)
CWE-121  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Ubuntu:20.04 editorconfig-core to version 0.12.1-1.1+deb11u1ubuntu0.1~esm1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream editorconfig-core package and not the editorconfig-core package as distributed by Ubuntu. See How to fix? for Ubuntu:20.04 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1