CVE-2026-59865

CRITICALPre-NVD 9.39.3
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

This critical-severity CVE scores 9.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 4.4% (91st percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
9.3EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 4.4%CVSS: 9.3Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Kiota is an OpenAPI based HTTP Client code generator. Prior to 1.29.1 and 1.32.5, kiota info read x-ms-kiota-info.languagesInformation..dependencyInstallCommand plus dependency name and version values from an OpenAPI description and presented the spec-supplied command as Kiota's recommended install command, allowing an attacker-controlled or compromised description to cause command injection when the suggested command was run manually or through the Kiota VS Code extension's kiota info --json dependency-install flow. This issue is fixed in version 1.29.1 and 1.32.5.

CVSS v3
9.3
EG Score
9.3CRITICALmedium confidence
EG Risk
59
EG Risk 59/100

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 (value × EchelonGraph’s weight)
Severity93% × 45%
The EG Score, 9.3 of 10.
Exploitation4.4% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
4.4%
EPSS %ILE
91st
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)3 days if the affected system is publicly exposed; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

July 16, 2026

Last Modified

August 17, 2026

Advisory Details (4)

Auto-updated Oct 7, 2026
Patch available. Sources: github, github_commit, github_pr, github_release.
GitHub advisoryMentions a patch (unverified)

Command injection via x-ms-kiota-info dependencyInstallCommand surfaced by `kiota info` (Microsoft Kiota) · Advisory · microsoft/kiota · GitHub

https://github.com/microsoft/kiota/security/advisories/GHSA-hq9q-27g5-qwpj
GitHub release Patch Available

v1.32.5

Patch available: microsoft/kiota v1.32.5

https://github.com/microsoft/kiota/releases/tag/v1.32.5
GitHub pull request

fix: do not use the install command from the OpenAPI extension

Fix merged in microsoft/kiota PR #7883 on 2026-07-01 — awaiting tagged release

https://github.com/microsoft/kiota/pull/7883
GitHub commit

commit e1d6d76c6eec (microsoft/kiota)

Fix landed in microsoft/kiota commit e1d6d76c6eec — awaiting tagged release

https://github.com/microsoft/kiota/commit/e1d6d76c6eecbe50785429166faaf8c831e036c6

Vendor Advisories for CVE-2026-59865(1)

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

Affected Packages

(2 across 1 ecosystem)
NuGet(2)
PackageVulnerable rangeFix by version rangeDependents
Microsoft.OpenApi.Kiota0.1.0-preview ... 1.9.1 (66 versions)
  • 1.30.0 up to 1.32.5: fixed in 1.32.5
  • every version up to 1.29.1: fixed in 1.29.1
—
Microsoft.OpenApi.Kiota.Builder0.2.0-preview ... 1.9.1 (46 versions)
  • 1.30.0 up to 1.32.5: fixed in 1.32.5
  • every version up to 1.29.1: fixed in 1.29.1
—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 15× in last 7d / 39× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 148 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 48 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-16 16:43 UTCEPSS rescoreEPSS 4.4% · 91st percentile
  2. 2026-10-16 08:16 UTCEG score recompute
  3. 2026-10-15 16:32 UTCEPSS rescoreEPSS 4.4% · 91st percentile
  4. 2026-10-15 06:14 UTCEG score recompute
  5. 2026-10-14 16:33 UTCEPSS rescoreEPSS 4.4% · 91st percentile
  6. 2026-10-14 01:51 UTCEG score recompute
  7. 2026-10-13 16:34 UTCEPSS rescoreEPSS 4.4% · 91st percentile
  8. 2026-10-12 22:06 UTCEG score recompute
  9. 2026-10-12 16:34 UTCEPSS rescoreEPSS 4.4% · 91st percentile
  10. 2026-10-12 15:52 UTCEG score recompute
  11. 2026-10-11 19:36 UTCEG score recompute
  12. 2026-10-11 16:51 UTCEG score recompute
  13. 2026-10-11 14:13 UTCEG score recompute
  14. 2026-10-11 13:49 UTCEPSS rescoreEPSS 4.4% · 91st percentile
  15. 2026-10-10 20:00 UTCEPSS rescoreEPSS 4.4% · 91st percentile
  16. 2026-10-09 20:07 UTCEPSS rescoreEPSS 4.4% · 90th percentile
  17. 2026-10-08 17:13 UTCEPSS rescoreEPSS 4.4% · 90th percentile
  18. 2026-10-07 23:48 UTCEPSS rescoreEPSS 4.4% · 90th percentile
  19. 2026-10-06 15:18 UTCEPSS rescoreEPSS 4.4% · 90th percentile
  20. 2026-10-05 17:43 UTCEPSS rescoreEPSS 4.4% · 90th percentile
  21. 2026-10-04 23:22 UTCEPSS rescoreEPSS 4.4% · 90th percentile
  22. 2026-10-03 14:26 UTCEPSS rescoreEPSS 4.4% · 90th percentile
  23. 2026-10-02 17:56 UTCEPSS rescoreEPSS 4.4% · 90th percentile
  24. 2026-10-01 19:50 UTCEPSS rescoreEPSS 4.4% · 90th percentile
  25. 2026-10-01 11:23 UTCEG score recompute
Show 75 more
  1. 2026-09-30 15:03 UTCEPSS rescoreEPSS 4.4% · 90th percentile
  2. 2026-09-29 15:22 UTCEPSS rescoreEPSS 4.4% · 90th percentile
  3. 2026-09-28 13:51 UTCEPSS rescoreEPSS 4.4% · 90th percentile
  4. 2026-09-28 08:36 UTCEG score recompute
  5. 2026-09-27 13:48 UTCEPSS rescoreEPSS 4.4% · 90th percentile
  6. 2026-09-26 15:59 UTCEPSS rescoreEPSS 4.4% · 90th percentile
  7. 2026-09-24 14:04 UTCEPSS rescoreEPSS 4.4% · 90th percentile
  8. 2026-09-24 08:31 UTCEG score recompute
  9. 2026-09-23 17:54 UTCEPSS rescoreEPSS 4.4% · 90th percentile
  10. 2026-09-23 03:02 UTCEG score recompute
  11. 2026-09-20 20:16 UTCEPSS rescoreEPSS 4.4% · 90th percentile
  12. 2026-09-18 19:28 UTCEPSS rescoreEPSS 4.4% · 90th percentile
  13. 2026-09-18 04:39 UTCEG score recompute
  14. 2026-09-17 19:31 UTCEPSS rescoreEPSS 4.4% · 90th percentile
  15. 2026-09-16 14:08 UTCEPSS rescoreEPSS 4.4% · 90th percentile
  16. 2026-09-16 05:15 UTCEPSS rescoreEPSS 4.4% · 90th percentile
  17. 2026-09-15 03:11 UTCEPSS rescoreEPSS 4.4% · 90th percentile
  18. 2026-09-13 23:09 UTCEG score recompute
  19. 2026-09-13 16:47 UTCEPSS rescoreEPSS 4.4% · 90th percentile
  20. 2026-09-12 16:41 UTCEG score recompute
  21. 2026-09-11 21:41 UTCEG score recompute
  22. 2026-09-11 14:53 UTCEPSS rescoreEPSS 4.4% · 90th percentile
  23. 2026-09-10 09:35 UTCEPSS rescoreEPSS 4.4% · 90th percentile
  24. 2026-09-08 22:01 UTCEPSS rescoreEPSS 4.4% · 90th percentile
  25. 2026-09-08 00:31 UTCEG score recompute
  26. 2026-09-07 16:01 UTCEPSS rescoreEPSS 4.4% · 90th percentile
  27. 2026-09-06 17:41 UTCEG score recompute
  28. 2026-09-06 13:47 UTCEPSS rescoreEPSS 4.4% · 90th percentile
  29. 2026-09-05 20:40 UTCEG score recompute
  30. 2026-09-04 05:07 UTCEPSS rescoreEPSS 4.4% · 90th percentile
  31. 2026-09-02 14:12 UTCEPSS rescoreEPSS 4.4% · 90th percentile
  32. 2026-09-01 13:54 UTCEPSS rescoreEPSS 4.4% · 90th percentile
  33. 2026-09-01 04:40 UTCEPSS rescoreEPSS 4.4% · 90th percentile
  34. 2026-08-30 19:47 UTCEG score recompute
  35. 2026-08-30 19:17 UTCEPSS rescoreEPSS 4.4% · 90th percentile
  36. 2026-08-30 03:35 UTCEG score recompute
  37. 2026-08-30 01:22 UTCEPSS rescoreEPSS 4.4% · 90th percentile
  38. 2026-08-28 21:42 UTCEPSS rescoreEPSS 4.4% · 90th percentile
  39. 2026-08-27 21:27 UTCEG score recompute
  40. 2026-08-27 14:25 UTCEPSS rescoreEPSS 4.4% · 90th percentile
  41. 2026-08-26 22:52 UTCEG score recompute
  42. 2026-08-26 14:46 UTCEPSS rescoreEPSS 4.4% · 90th percentile
  43. 2026-08-25 14:37 UTCEG score recompute
  44. 2026-08-25 13:49 UTCEPSS rescoreEPSS 4.4% · 90th percentile
  45. 2026-08-24 15:29 UTCEG score recompute
  46. 2026-08-24 11:42 UTCEG score recompute
  47. 2026-08-23 04:08 UTCEG score recompute
  48. 2026-08-23 00:19 UTCEPSS rescoreEPSS 3.2% · 87th percentile
  49. 2026-08-22 01:24 UTCEG score recompute
  50. 2026-08-21 23:49 UTCEPSS rescoreEPSS 3.2% · 87th percentile
  51. 2026-08-21 02:40 UTCEG score recompute
  52. 2026-08-20 22:55 UTCEPSS rescoreEPSS 3.2% · 87th percentile
  53. 2026-08-19 23:56 UTCEG score recompute
  54. 2026-08-19 17:04 UTCEPSS rescoreEPSS 3.2% · 87th percentile
  55. 2026-08-18 19:56 UTCEG score recompute
  56. 2026-08-18 13:48 UTCEPSS rescoreEPSS 3.2% · 87th percentile
  57. 2026-08-17 15:21 UTCEG score recompute
  58. 2026-08-17 13:47 UTCEPSS rescoreEPSS 3.2% · 87th percentile
  59. 2026-08-16 17:49 UTCEG score recompute
  60. 2026-08-16 14:56 UTCEPSS rescoreEPSS 3.2% · 87th percentile
  61. 2026-08-16 02:18 UTCEG score recompute
  62. 2026-08-16 02:14 UTCEPSS rescoreEPSS 3.2% · 86th percentile
  63. 2026-08-15 02:57 UTCEG score recompute
  64. 2026-08-15 01:30 UTCEPSS rescoreEPSS 3.2% · 86th percentile
  65. 2026-08-14 00:27 UTCEG score recompute
  66. 2026-08-13 22:00 UTCEPSS rescoreEPSS 3.2% · 86th percentile
  67. 2026-08-12 17:36 UTCEG score recompute
  68. 2026-08-12 13:51 UTCEPSS rescoreEPSS 3.2% · 86th percentile
  69. 2026-08-11 15:01 UTCEG score recompute
  70. 2026-08-11 03:40 UTCEG score recompute
  71. 2026-08-11 00:00 UTCEPSS rescoreEPSS 3.2% · 86th percentile
  72. 2026-08-09 17:27 UTCEG score recompute
  73. 2026-08-09 13:46 UTCEPSS rescoreEPSS 3.2% · 86th percentile
  74. 2026-08-08 18:45 UTCEG score recompute
  75. 2026-08-08 16:37 UTCEPSS rescoreEPSS 3.2% · 86th percentile

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-59865?
CVE-2026-59865 is a critical-severity vulnerability; its CVE record was published on July 16, 2026. Kiota is an OpenAPI based HTTP Client code generator. Prior to 1.29.1 and 1.32.5, kiota info read x-ms-kiota-info.languagesInformation.<language>.dependencyInstallCommand plus dependency name and version values from an OpenAPI description and presented the spec-supplied command as Kiota's…
When was the CVE record for CVE-2026-59865 published?
The CVE record for CVE-2026-59865 was published on July 16, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of August 17, 2026; the record at its source may have been updated since.
Is CVE-2026-59865 actively exploited?
CVE-2026-59865 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 4.4% probability of exploitation in the next 30 days (91st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-59865?
CVE-2026-59865 has a CVSS base score of 9.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-59865?
A fix for CVE-2026-59865 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-59865 are linked in the Vendor Advisories panel on this page.

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