# CVE-2026-40489: editorconfig: editorconfig-core-c is an EditorConfig core library for use by plugins supporting EditorConfig parsing CVE-2026-40489 is fixed in 8 products on 1 platform, first by editorconfig 0.12.1-1.1ubuntu0.18.04.1~esm3, released April 19, 2026. It is not reported as exploited. Patch Radar priority: Routine. - Web page: https://patchblox.com/security/cve/CVE-2026-40489 - Priority: Routine - CVSS: n/a (Medium) - EPSS: 0.0015 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Apr 19, 2026 ## 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. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | editorconfig Ubuntu 18.04.6 LTS (bionic) | 0.12.1-1.1ubuntu0.18.04.1~esm3 | [editorconfig 0.12.1-1.1ubuntu0.18.04.1~esm3](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-editorconfig-0.12.1-1.1ubuntu0.18.04.1-esm3.md) | Apr 19, 2026 | | Linux | editorconfig Ubuntu 20.04 LTS (focal) | 0.12.1-1.1+deb11u1ubuntu0.1~esm1 | [editorconfig 0.12.1-1.1+deb11u1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-editorconfig-0.12.1-1.1-deb11u1ubuntu0.1-esm1.md) | Apr 19, 2026 | | Linux | editorconfig Ubuntu 22.04.1 LTS (jammy) | 0.12.5-2ubuntu0.1~esm3 | [editorconfig 0.12.5-2ubuntu0.1~esm3](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-editorconfig-0.12.5-2ubuntu0.1-esm3.md) | Apr 19, 2026 | | Linux | editorconfig Ubuntu 24.04.5 LTS (noble) | 0.12.7-0.1ubuntu0.1 | [editorconfig 0.12.7-0.1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-editorconfig-0.12.7-0.1ubuntu0.1.md) | May 15, 2026 | | Linux | editorconfig Ubuntu 25.10 (questing) | 0.12.9+~0.17.1-1ubuntu2.1 | [editorconfig 0.12.9+~0.17.1-1ubuntu2.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-editorconfig-0.12.9-0.17.1-1ubuntu2.1.md) | May 15, 2026 | | Linux | editorconfig Ubuntu 26.04.1 LTS (resolute) | 0.12.10+~0.17.1-3ubuntu0.1 | [editorconfig 0.12.10+~0.17.1-3ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-editorconfig-0.12.10-0.17.1-3ubuntu0.1.md) | Apr 19, 2026 | | Linux | editorconfig amzn 2023 | 0.12.11-2.amzn2023.0.1 | [ALAS2023-2026-1642](https://patchblox.com/security/data/fix/linux/alas2023-2026-1642.md) | May 11, 2026 | | Linux | editorconfig-core-c opensuse-leap 16.0 | 0.12.9-160000.3.1 | [OPENSUSE-SU-2026:20966-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20966-1.md) | Jun 15, 2026 | | Linux | editorconfig-core-c sles 15.7 | 0.12.6-150600.3.6.1 | [SUSE-SU-2026:2731-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-2731-1.md) | Jul 2, 2026 | | Linux | editorconfig-core-c sles 16.0 | 0.12.9-160000.3.1 | [SUSE-SU-2026:22125-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-22125-1.md) | Jun 15, 2026 | | Linux | editorconfig-debuginfo amzn 2023 | 0.12.11-2.amzn2023.0.1 | [ALAS2023-2026-1642](https://patchblox.com/security/data/fix/linux/alas2023-2026-1642.md) | May 11, 2026 | | Linux | editorconfig-debugsource amzn 2023 | 0.12.11-2.amzn2023.0.1 | [ALAS2023-2026-1642](https://patchblox.com/security/data/fix/linux/alas2023-2026-1642.md) | May 11, 2026 | | Linux | editorconfig-devel amzn 2023 | 0.12.11-2.amzn2023.0.1 | [ALAS2023-2026-1642](https://patchblox.com/security/data/fix/linux/alas2023-2026-1642.md) | May 11, 2026 | | Linux | editorconfig-libs amzn 2023 | 0.12.11-2.amzn2023.0.1 | [ALAS2023-2026-1642](https://patchblox.com/security/data/fix/linux/alas2023-2026-1642.md) | May 11, 2026 | | Linux | editorconfig-libs-debuginfo amzn 2023 | 0.12.11-2.amzn2023.0.1 | [ALAS2023-2026-1642](https://patchblox.com/security/data/fix/linux/alas2023-2026-1642.md) | May 11, 2026 | | Linux | libeditorconfig0 Ubuntu 18.04.6 LTS (bionic) | 0.12.1-1.1ubuntu0.18.04.1~esm3 | [libeditorconfig0 0.12.1-1.1ubuntu0.18.04.1~esm3](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libeditorconfig0-0.12.1-1.1ubuntu0.18.04.1-esm3.md) | Apr 19, 2026 | | Linux | libeditorconfig0 Ubuntu 20.04 LTS (focal) | 0.12.1-1.1+deb11u1ubuntu0.1~esm1 | [libeditorconfig0 0.12.1-1.1+deb11u1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libeditorconfig0-0.12.1-1.1-deb11u1ubuntu0.1-esm1.md) | Apr 19, 2026 | | Linux | libeditorconfig0 Ubuntu 22.04.1 LTS (jammy) | 0.12.5-2ubuntu0.1~esm3 | [libeditorconfig0 0.12.5-2ubuntu0.1~esm3](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libeditorconfig0-0.12.5-2ubuntu0.1-esm3.md) | Apr 19, 2026 | | Linux | libeditorconfig0 Ubuntu 24.04.5 LTS (noble) | 0.12.7-0.1ubuntu0.1 | [libeditorconfig0 0.12.7-0.1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libeditorconfig0-0.12.7-0.1ubuntu0.1.md) | May 15, 2026 | | Linux | libeditorconfig0 Ubuntu 25.10 (questing) | 0.12.9+~0.17.1-1ubuntu2.1 | [libeditorconfig0 0.12.9+~0.17.1-1ubuntu2.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libeditorconfig0-0.12.9-0.17.1-1ubuntu2.1.md) | May 15, 2026 | | Linux | libeditorconfig0 Ubuntu 26.04.1 LTS (resolute) | 0.12.10+~0.17.1-3ubuntu0.1 | [libeditorconfig0 0.12.10+~0.17.1-3ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libeditorconfig0-0.12.10-0.17.1-3ubuntu0.1.md) | Apr 19, 2026 | --- Data as of 2026-11-08T00:53:09Z UTC. 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