CVE-2026-40489

HIGHNVD 8.68.6—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.6 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 95% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Elevated
8.6EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.6Exploit: Elevated riskExposed: 0

A fix is available — apply it.

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 v3
8.6
EG Score
8.6(medium)
EG Risk
55(Track*)
EG Risk 55/100SSVC: Track*

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity86% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
0%
EPSS %ILE
5%
KEV
Not listed

Published

April 18, 2026

Last Modified

April 20, 2026

Advisory Details (3)

Auto-updated Jun 3, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit, github_release, github.
github Patch Available🟡 PoC Available

Incomplete fix for CVE-2023-0341 — stack buffer overflow in ec_glob() via unbounded strcpy into l_pattern[8194] in editorconfig-core-c 0.12.7 · Advisory · editorconfig/editorconfig-core-c · GitHub

https://github.com/editorconfig/editorconfig-core-c/security/advisories/GHSA-97xg-vrcq-254h
github_release Patch Available

v0.12.11

Patch available: editorconfig/editorconfig-core-c v0.12.11

https://github.com/editorconfig/editorconfig-core-c/releases/tag/v0.12.11
github_commit Patch Available

commit 5159be88ad50 (editorconfig/editorconfig-core-c)

Patch available: editorconfig/editorconfig-core-c v0.12.11 (contains commit 5159be88ad50)

https://github.com/editorconfig/editorconfig-core-c/commit/5159be88ad50641d9843289adda791ba300421ff

Patch Availability(2)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulibeditorconfig0 (0.12.0-2ubuntu0.1~esm3) @ xenial2026-06-14ubuntu
ubuntulibeditorconfig0 (0.12.10+~0.17.1-3ubuntu0.1) @ resolute2026-06-14ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
editorconfig-core0.12.1-1.1 ... 0.12.9+~0.17.1-2 (15 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
editorconfig-core0.12.10+~0.17.1-1 ... 0.12.9+~0.17.1-2 (8 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
editorconfig-core0.12.10+~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——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
editorconfig-core0.12.10+~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——

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(2)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 6× in last 7d / 26× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 192 total refreshes for this CVE.

  1. 2026-09-15 03:11 UTCEPSS rescore
  2. 2026-09-13 16:47 UTCEPSS rescore
  3. 2026-09-11 14:53 UTCEPSS rescore
  4. 2026-09-11 09:37 UTCEPSS rescore
  5. 2026-09-10 09:34 UTCEPSS rescore
  6. 2026-09-08 22:00 UTCEPSS rescore
  7. 2026-09-07 16:01 UTCEPSS rescore
  8. 2026-09-06 13:47 UTCEPSS rescore
  9. 2026-09-04 05:06 UTCEPSS rescore
  10. 2026-09-02 14:12 UTCEPSS rescore
  11. 2026-09-02 03:40 UTCOSV refresh
  12. 2026-09-01 13:53 UTCEPSS rescore
  13. 2026-09-01 04:39 UTCEPSS rescore
  14. 2026-08-30 19:17 UTCEPSS rescore
  15. 2026-08-30 01:22 UTCEPSS rescore
  16. 2026-08-28 21:41 UTCEPSS rescore
  17. 2026-08-27 14:25 UTCEPSS rescore
  18. 2026-08-26 14:46 UTCEPSS rescore
  19. 2026-08-25 13:49 UTCEPSS rescore
  20. 2026-08-23 00:19 UTCEPSS rescore
  21. 2026-08-21 23:49 UTCEPSS rescore
  22. 2026-08-20 22:55 UTCEPSS rescore
  23. 2026-08-19 17:03 UTCEPSS rescore
  24. 2026-08-18 13:48 UTCEPSS rescore
  25. 2026-08-17 13:47 UTCEPSS rescore
Show 75 more
  1. 2026-08-16 14:56 UTCEPSS rescore
  2. 2026-08-16 06:28 UTCEG score recompute
  3. 2026-08-16 06:28 UTCVendor advisory
  4. 2026-08-16 02:14 UTCEPSS rescore
  5. 2026-08-15 02:13 UTCEG score recompute
  6. 2026-08-15 02:13 UTCVendor advisory
  7. 2026-08-15 01:30 UTCEPSS rescore
  8. 2026-08-14 15:25 UTCVendor advisory
  9. 2026-08-14 04:36 UTCEG score recompute
  10. 2026-08-14 04:36 UTCVendor advisory
  11. 2026-08-13 22:00 UTCEPSS rescore
  12. 2026-08-13 08:50 UTCVendor advisory
  13. 2026-08-12 18:46 UTCEG score recompute
  14. 2026-08-12 18:46 UTCVendor advisory
  15. 2026-08-12 13:51 UTCEPSS rescore
  16. 2026-08-11 16:57 UTCEG score recompute
  17. 2026-08-11 16:57 UTCVendor advisory
  18. 2026-08-11 13:43 UTCEPSS rescore
  19. 2026-08-11 02:32 UTCEG score recompute
  20. 2026-08-11 02:32 UTCVendor advisory
  21. 2026-08-11 00:00 UTCEPSS rescore
  22. 2026-08-10 12:49 UTCVendor advisory
  23. 2026-08-10 01:30 UTCVendor advisory
  24. 2026-08-09 14:41 UTCEG score recompute
  25. 2026-08-09 14:41 UTCVendor advisory
  26. 2026-08-09 13:46 UTCEPSS rescore
  27. 2026-08-09 03:51 UTCVendor advisory
  28. 2026-08-08 11:19 UTCVendor advisory
  29. 2026-08-08 00:06 UTCEG score recompute
  30. 2026-08-08 00:06 UTCVendor advisory
  31. 2026-08-07 13:18 UTCVendor advisory
  32. 2026-08-06 21:23 UTCEG score recompute
  33. 2026-08-06 21:23 UTCVendor advisory
  34. 2026-08-06 13:46 UTCEPSS rescore
  35. 2026-08-06 10:22 UTCVendor advisory
  36. 2026-08-05 23:17 UTCEG score recompute
  37. 2026-08-05 23:17 UTCVendor advisory
  38. 2026-08-05 19:17 UTCEPSS rescore
  39. 2026-08-04 15:10 UTCEPSS rescore
  40. 2026-08-04 10:38 UTCEPSS rescore
  41. 2026-08-03 21:29 UTCEG score recompute
  42. 2026-08-03 21:29 UTCVendor advisory
  43. 2026-08-03 10:36 UTCEPSS rescore
  44. 2026-08-02 23:48 UTCVendor advisory
  45. 2026-08-02 12:59 UTCEG score recompute
  46. 2026-08-02 12:59 UTCVendor advisory
  47. 2026-08-02 02:27 UTCEPSS rescore
  48. 2026-08-01 04:16 UTCEPSS rescore
  49. 2026-07-30 16:28 UTCEPSS rescore
  50. 2026-07-30 01:30 UTCEPSS rescore
  51. 2026-07-28 15:36 UTCEPSS rescore
  52. 2026-07-27 14:13 UTCEPSS rescore
  53. 2026-07-25 14:18 UTCEPSS rescore
  54. 2026-07-25 14:18 UTCEPSS rescore
  55. 2026-07-24 14:17 UTCEPSS rescore
  56. 2026-07-24 14:17 UTCEPSS rescore
  57. 2026-07-23 14:18 UTCEPSS rescore
  58. 2026-07-23 14:18 UTCEPSS rescore
  59. 2026-07-23 03:11 UTCEG score recompute
  60. 2026-07-22 14:08 UTCEPSS rescore
  61. 2026-07-21 15:24 UTCEPSS rescore
  62. 2026-07-20 17:08 UTCEPSS rescore
  63. 2026-07-20 07:32 UTCOSV refresh
  64. 2026-07-19 14:31 UTCEPSS rescore
  65. 2026-07-19 02:29 UTCEPSS rescore
  66. 2026-07-18 10:04 UTCEPSS rescore
  67. 2026-07-16 17:03 UTCEPSS rescore
  68. 2026-07-15 16:57 UTCEPSS rescore
  69. 2026-07-15 16:57 UTCEPSS rescore
  70. 2026-07-15 02:00 UTCEPSS rescore
  71. 2026-07-13 22:30 UTCEPSS rescore
  72. 2026-07-13 06:13 UTCEPSS rescore
  73. 2026-07-13 06:13 UTCEPSS rescore
  74. 2026-07-12 05:46 UTCEPSS rescore
  75. 2026-07-11 08:27 UTCEPSS rescore

Frequently asked(5)

What is CVE-2026-40489?
CVE-2026-40489 is a high vulnerability published on April 18, 2026. 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 ecglob() that allows an attacker to crash any application using libeditorconfig by providing a specially crafted…
When was CVE-2026-40489 disclosed?
CVE-2026-40489 was first published in the National Vulnerability Database on April 18, 2026, with the most recent update on April 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-40489 actively exploited?
CVE-2026-40489 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 95.4% of all scored CVEs.
What is the CVSS score of CVE-2026-40489?
CVE-2026-40489 has a CVSS v3 base score of 8.6 (NVD).
How do I remediate CVE-2026-40489?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-40489, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-40489

Explore →

Is Your Infrastructure Affected by CVE-2026-40489?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs