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
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: None knownExposed: 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)
EG Risk
59(Track)
EG Risk 59/100SSVC: 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
Severity98% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
44%
KEV
Not listed

Published

April 8, 2026

Last Modified

July 25, 2026

Advisory Details (4)

Auto-updated Sep 12, 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(20)

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

Patch Availability(19)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatgolang-0:1.25.9-1.el9_42026-07-29redhat
redhatgolang-0:1.25.9-1.el9_22026-07-29redhat
redhatopenshift4/ovirt-csi-driver-rhel9-operator:17821892862026-07-09redhat
redhatopenshift4/ovirt-csi-driver-rhel9:17819301252026-07-01redhat
redhatopenshift4/ovirt-csi-driver-rhel8-operator:17818327412026-07-01redhat
redhatopenshift4/ovirt-csi-driver-rhel9-operator:17797876002026-06-03redhat
redhatopenshift4/ovirt-csi-driver-rhel9-operator:17792512322026-05-27redhat
redhatopenshift-service-mesh/istio-rhel9-operator:17781504742026-05-12redhat
redhatopenshift-service-mesh/istio-rhel9-operator:17781491272026-05-12redhat
redhatopenshift-service-mesh/istio-proxyv2-rhel9:17780123992026-05-12redhat
redhatopenshift-service-mesh/istio-rhel9-operator:17781496572026-05-12redhat
redhatgolang-0:1.25.9-1.el10_02026-05-11redhat
redhatgolang-0:1.25.9-1.el9_62026-05-11redhat
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

(6 across 5 ecosystems)
Debian:14(2)
PackageVulnerable rangeFixed inDependents
golang-1.251.25.0-1 ... 1.25.8-1 (9 versions)1.25.9-1—
golang-1.261.26.0-1, 1.26.1-1, 1.26~rc2-1, 1.26~rc3-1, 1.26~rc3-21.26.2-1—
Debian:11(1)
PackageVulnerable rangeFixed inDependents
golang-1.151.15.15-1 ... 1.15.9-6 (10 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
golang-1.191.19.10-1 ... 1.19.9-1 (12 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
golang-1.241.24.12-1 ... 1.24.9-1 (10 versions)——
Go(1)
PackageVulnerable rangeFixed inDependents
toolchain—1.26.2—

Additional Vendor Advisories

(2)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 7× in last 7d / 27× 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 327 total refreshes for this CVE.

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

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 July 25, 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 1% probability of exploitation in the next 30 days, which ranks it in the top 55.9% of all scored CVEs.
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