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 — 4 sources updated this week
5.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 5.1Exploit: None knownExposed services: Not assessed

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
5.1MEDIUMmedium confidence
EG Risk
23
EG Risk 23/100CISA SSVC

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%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
5th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 5, 2026

Last Modified

September 21, 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(7)

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

Patch Availability(5)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatlibkcapi-0:1.5.0-6.el10_02026-09-21redhat
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 rangeFix by version rangeDependents
libkcapi—
  • 0.12.0 up to 1.5.1-r0: fixed in 1.5.1-r0
—
Alpine:v3.22(1)
PackageVulnerable rangeFix by version rangeDependents
libkcapi—
  • 0.12.0 up to 1.5.1-r0: fixed in 1.5.1-r0
—
Alpine:v3.23(1)
PackageVulnerable rangeFix by version rangeDependents
libkcapi—
  • 0.12.0 up to 1.5.1-r0: fixed in 1.5.1-r0
—
Alpine:v3.24(1)
PackageVulnerable rangeFix by version rangeDependents
libkcapi—
  • 0.12.0 up to 1.5.1-r0: fixed in 1.5.1-r0
—
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
libkcapi1.2.1-1 ... 1.4.0-1 (6 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
libkcapi1.4.0-1, 1.4.0-2, 1.5.1-1, 1.5.1-2
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
libkcapi1.4.0-1, 1.4.0-2, 1.5.1-1, 1.5.1-2
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
libkcapi1.4.0-1, 1.4.0-2
  • every version up to 1.5.1-1: fixed in 1.5.1-1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 17× in last 7d / 89× 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 195 total refreshes for this CVE.

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

Related CVEs(same product + same vendor + same CWE)

Same product

2 shown

Alpine:v3.21:libkcapi

Same vendor

2 shown

redhat:RHSA-2026:56985

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 on August 5, 2026, with the most recent update on September 21, 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 0.2% probability of exploitation in the next 30 days (5th percentile of EPSS-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?
A fix for CVE-2026-71227 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-71227 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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