CVE-2026-71227

MEDIUMNVD 5.15.1—
EchelonGraph scoreMEDIUM confidence

Score 5.1 from GitHub Security Advisory published 2026-08-05. NVD baseline CVSS 5.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — Patch released this week
5.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.1Exploit: None knownExposed: 0

A fix is available — apply it.

A flaw was found in libkcapi. A local attacker can influence an application that uses the Asynchronous Input/Output (AIO) interface. By reusing an AIO-enabled handle after a prior completion error, the _kcapi_aio_read_all() function can enter a non-terminating wait loop. This can lead to a persistent denial of service, making the affected application or thread unresponsive.

CVSS v3
5.1
EG Score
5.1(medium)
EG Risk
23(Track)
EG Risk 23/100SSVC: 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
Severity51% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
6%
KEV
Not listed

Published

August 5, 2026

Last Modified

September 14, 2026

Advisory Details (2)

Auto-updated Aug 5, 2026
Patch available. Sources: redhat.
redhat

2462867 – (CVE-2026-71227) CVE-2026-71227 libkcapi: Infinite loop denial of service in libkcapi _kcapi_aio_read_all() due to unhandled io_getevents() timeout return

https://bugzilla.redhat.com/show_bug.cgi?id=2462867
redhat Patch Available

CVE-2026-71227 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a

https://access.redhat.com/security/cve/CVE-2026-71227

Vendor Advisories for CVE-2026-71227(3)

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

Patch Availability(4)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatlibkcapi-0:1.5.1-1.el10_22026-09-14redhat
redhatlibkcapi-0:1.4.0-3.el8_102026-09-14redhat
redhatlibkcapi-0:1.4.0-3.el9_82026-09-14redhat
redhatlibkcapi-main-1.5.1-0.1.hum12026-08-19redhat

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

(8 across 8 ecosystems)
Alpine:v3.21(1)
PackageVulnerable rangeFixed inDependents
libkcapi—1.5.1-r0—
Alpine:v3.22(1)
PackageVulnerable rangeFixed inDependents
libkcapi—1.5.1-r0—
Alpine:v3.23(1)
PackageVulnerable rangeFixed inDependents
libkcapi—1.5.1-r0—
Alpine:v3.24(1)
PackageVulnerable rangeFixed inDependents
libkcapi—1.5.1-r0—
Debian:11(1)
PackageVulnerable rangeFixed inDependents
libkcapi1.2.1-1 ... 1.4.0-1 (6 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
libkcapi1.4.0-1——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
libkcapi1.4.0-1——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
libkcapi1.4.0-1——

Weakness Classification(1)

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

Additional Vendor Advisories

(3)

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 23× in last 7d / 103× 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 153 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-71227?
CVE-2026-71227 is a medium vulnerability published on August 5, 2026. A flaw was found in libkcapi. A local attacker can influence an application that uses the Asynchronous Input/Output (AIO) interface. By reusing an AIO-enabled handle after a prior completion error, the kcapiaioreadall() function can enter a non-terminating wait loop. This can lead to a persistent…
When was CVE-2026-71227 disclosed?
CVE-2026-71227 was first published in the National Vulnerability Database on August 5, 2026, with the most recent update on September 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-71227 actively exploited?
CVE-2026-71227 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 93.8% of all scored CVEs.
What is the CVSS score of CVE-2026-71227?
CVE-2026-71227 has a CVSS v3 base score of 5.1 (NVD).
How do I remediate CVE-2026-71227?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-71227, 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-2026-71227

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