Is CVE-2026-40489 in the CISA KEV catalog?

No. CVE-2026-40489 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the EPSS score for CVE-2026-40489?

CVE-2026-40489 has an EPSS score of 0.15% (5th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-40489?

Upgrade editorconfig on ubuntu 16.04 to 0.12.0-2ubuntu0.1~esm3 or later. Fixes are available for 5 affected products.

CVE & CISA-KEV Catalog

CVE-2026-40489

UNSCORED

NVD

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.

CWE-121Stack-based Buffer Overflow CWE-787Out-of-bounds Write

How to fix

Remediation Available

editorconfigUbuntu

Fixed in:0.12.0-2ubuntu0.1~esm3USN-8238-2

Fixed in:0.12.1-1.1ubuntu0.18.04.1~esm3USN-8238-2

Fixed in:0.12.1-1.1+deb11u1ubuntu0.1~esm1USN-8238-2

Fixed in:0.12.5-2ubuntu0.1~esm3USN-8238-2

Fixed in:0.12.7-0.1ubuntu0.1USN-8238-1

Fixed in:0.12.9+~0.17.1-1ubuntu2.1USN-8238-1

editorconfig-coreUbuntu

Fixed in:0.12.0-2ubuntu0.1~esm3USN-8238-2

Fixed in:0.12.1-1.1ubuntu0.18.04.1~esm3USN-8238-2

Fixed in:0.12.1-1.1+deb11u1ubuntu0.1~esm1USN-8238-2

Fixed in:0.12.5-2ubuntu0.1~esm3USN-8238-2

Fixed in:0.12.7-0.1ubuntu0.1USN-8238-1

Fixed in:0.12.9+~0.17.1-1ubuntu2.1USN-8238-1

editorconfig-docUbuntu

Fixed in:0.12.0-2ubuntu0.1~esm3USN-8238-2

Fixed in:0.12.1-1.1ubuntu0.18.04.1~esm3USN-8238-2

Fixed in:0.12.1-1.1+deb11u1ubuntu0.1~esm1USN-8238-2

Fixed in:0.12.5-2ubuntu0.1~esm3USN-8238-2

libeditorconfig-devUbuntu

Fixed in:0.12.0-2ubuntu0.1~esm3USN-8238-2

Fixed in:0.12.1-1.1ubuntu0.18.04.1~esm3USN-8238-2

Fixed in:0.12.1-1.1+deb11u1ubuntu0.1~esm1USN-8238-2

Fixed in:0.12.5-2ubuntu0.1~esm3USN-8238-2

libeditorconfig0Ubuntu

Fixed in:0.12.0-2ubuntu0.1~esm3USN-8238-2

Fixed in:0.12.1-1.1ubuntu0.18.04.1~esm3USN-8238-2

Fixed in:0.12.1-1.1+deb11u1ubuntu0.1~esm1USN-8238-2

Fixed in:0.12.5-2ubuntu0.1~esm3USN-8238-2

Fixed in:0.12.7-0.1ubuntu0.1USN-8238-1

Fixed in:0.12.9+~0.17.1-1ubuntu2.1USN-8238-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3.1 Vector

No CVSS vector data available.

Exploit Intelligence

0.15%probability of exploitation in 30 days

5thpercentile

Low risk: more likely to be exploited than 5% of all known CVEs.

References

Other references3

Related Vulnerabilities

Other CWE-121 (Stack-based Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-22457	Critical	9.0	100%	KEV + Ransom	Fix
CVE-2025-0282	Critical	9.0	100%	KEV + Ransom	-
CVE-2021-20038	Critical	9.8	100%	KEV + Ransom	-
CVE-2009-0927	High	8.8	97%	KEV	Fix
CVE-2020-10924	High	8.8	87%	-	-
CVE-2022-20705	Critical	10.0	80%	-	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-20.