CVE-2026-27143

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-04-08. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 9.8Exploit: NoneExposed: 0

A fix is available — apply it.

Arithmetic over induction variables in loops were not correctly checked for underflow or overflow. As a result, the compiler would allow for invalid indexing to occur at runtime, potentially leading to memory corruption.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
41.5%
KEV
Not listed

Published

April 8, 2026

Last Modified

April 16, 2026

Advisory Details (4)

Auto-updated Apr 29, 2026
No patch confirmed yet.
generic

GO-2026-4868 - Go Packages

https://pkg.go.dev/vuln/GO-2026-4868
generic
https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU
generic

cmd/compile: possible memory corruption after bound check elimination · Issue #78333 · golang/go · GitHub

https://go.dev/issue/78333
generic
https://go.dev/cl/763765

Vendor Advisories for CVE-2026-27143(18)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(14)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatopenshift4/ovirt-csi-driver-rhel9-operator:17797876002026-06-03redhat
redhatopenshift4/ovirt-csi-driver-rhel9-operator:17792512322026-05-27redhat
redhatopenshift-service-mesh/istio-proxyv2-rhel9:17780123992026-05-12redhat
redhatopenshift-service-mesh/istio-rhel9-operator:17781491272026-05-12redhat
redhatopenshift-service-mesh/istio-rhel9-operator:17781496572026-05-12redhat
redhatopenshift-service-mesh/istio-rhel9-operator:17781504742026-05-12redhat
redhatgolang-0:1.25.9-1.el9_62026-05-11redhat
redhatgolang-0:1.25.9-1.el10_02026-05-11redhat
redhatopenshift-service-mesh/ratelimit-rhel8:17773197732026-04-29redhat
redhatgo-toolset:rhel8-8100020260422204008.a3795dee2026-04-27redhat
redhatgolang-0:1.25.9-1.el9_72026-04-24redhat
redhatgolang-0:1.25.9-3.el10_12026-04-23redhat
redhatgolang1-25-main-1.25.9-1.hum12026-04-10redhat
redhatgolang1-26-main-1.26.2-1.hum12026-04-09redhat

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

(1 across 1 ecosystem)
Go(1)
PackageVulnerable rangeFixed inDependents
toolchain—1.26.2—

Data Freshness Timeline

(refreshed 10× in last 7d / 48× 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 182 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-27143?
CVE-2026-27143 is a critical vulnerability published on April 8, 2026. Arithmetic over induction variables in loops were not correctly checked for underflow or overflow. As a result, the compiler would allow for invalid indexing to occur at runtime, potentially leading to memory corruption.
When was CVE-2026-27143 disclosed?
CVE-2026-27143 was first published in the National Vulnerability Database on April 8, 2026, with the most recent update on April 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-27143 actively exploited?
CVE-2026-27143 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 41.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-27143?
CVE-2026-27143 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-27143?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-27143, 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-2026-27143

Explore →

Is Your Infrastructure Affected by CVE-2026-27143?

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

Start Free Scan →Browse All CVEs