editorconfig-core — security advisory
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.
- Products
- editorconfig-core
- Affected versions
- 0.12.10+~0.17.1-1, 0.12.10+~0.17.1-2, 0.12.10+~0.17.1-3, 0.12.6-0.1, 0.12.7-0.1, 0.12.9+~0.15.1-1, 0.12.9+~0.17.1-1, 0.12.9+~0.17.1-2
- Fixed versions
- Not specified
- CVEs
- CVE-2026-40489
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 17:47 UTC · Revision 2
Source evidence
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.
osv:DEBIAN-CVE-2026-40489
editorconfig-core
Fixed versions: Not specified
editorconfig-core
Fixed versions: Not specified
editorconfig-core
Fixed versions: Not specified
Complete source record
{
"id": "c03438b7f39a448ca9c36167b4fb0a62ef419edd73a68ca1c32e591e24dd2500",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-40489",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-40489",
"summary": "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.",
"evidence": "osv:DEBIAN-CVE-2026-40489",
"products": [
{
"name": {
"value": "editorconfig-core",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.12.10+~0.17.1-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.12.10+~0.17.1-2",
"evidence": "/affected/0/versions"
},
{
"value": "0.12.10+~0.17.1-3",
"evidence": "/affected/0/versions"
},
{
"value": "0.12.6-0.1",
"evidence": "/affected/0/versions"
},
{
"value": "0.12.7-0.1",
"evidence": "/affected/0/versions"
},
{
"value": "0.12.9+~0.15.1-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.12.9+~0.17.1-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.12.9+~0.17.1-2",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "editorconfig-core",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.12.10+~0.17.1-1",
"evidence": "/affected/1/versions"
},
{
"value": "0.12.10+~0.17.1-2",
"evidence": "/affected/1/versions"
},
{
"value": "0.12.10+~0.17.1-3",
"evidence": "/affected/1/versions"
},
{
"value": "0.12.9+~0.17.1-1",
"evidence": "/affected/1/versions"
},
{
"value": "0.12.9+~0.17.1-2",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "editorconfig-core",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.12.10+~0.17.1-1",
"evidence": "/affected/2/versions"
},
{
"value": "0.12.10+~0.17.1-2",
"evidence": "/affected/2/versions"
},
{
"value": "0.12.10+~0.17.1-3",
"evidence": "/affected/2/versions"
},
{
"value": "0.12.9+~0.17.1-1",
"evidence": "/affected/2/versions"
},
{
"value": "0.12.9+~0.17.1-2",
"evidence": "/affected/2/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "DEBIAN-CVE-2026-40489",
"aliases": [
"DEBIAN-CVE-2026-40489"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "editorconfig-core",
"purl": "pkg:deb/debian/editorconfig-core?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"0.12.10+~0.17.1-1",
"0.12.10+~0.17.1-2",
"0.12.10+~0.17.1-3",
"0.12.6-0.1",
"0.12.7-0.1",
"0.12.9+~0.15.1-1",
"0.12.9+~0.17.1-1",
"0.12.9+~0.17.1-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-40489.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "editorconfig-core",
"purl": "pkg:deb/debian/editorconfig-core?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"0.12.10+~0.17.1-1",
"0.12.10+~0.17.1-2",
"0.12.10+~0.17.1-3",
"0.12.9+~0.17.1-1",
"0.12.9+~0.17.1-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-40489.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "editorconfig-core",
"purl": "pkg:deb/debian/editorconfig-core?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"0.12.10+~0.17.1-1",
"0.12.10+~0.17.1-2",
"0.12.10+~0.17.1-3",
"0.12.9+~0.17.1-1",
"0.12.9+~0.17.1-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-40489.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-27T09:47:34.144389910Z",
"provider": "osv",
"upstream": [
"CVE-2026-40489"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2026-40489"
]
},
"related_cves": [
{
"value": "CVE-2026-40489",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 461209,
"published_at": "2026-04-18T02:16:11.827+00:00"
}