CVE-2026-59867

HIGHPre-NVD 7.17.1—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 1.9%, top 22% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
7.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 2%CVSS: 7.1Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Kiota is an OpenAPI based HTTP Client code generator. Prior to 1.32.5, Kiota resolved OpenAPI $ref values by fetching remote http(s) URLs and reading local absolute or out-of-tree file paths, allowing kiota generate on an attacker-controlled or attacker-influenced description to perform build-time SSRF, remote file inclusion, and local file inclusion by inlining external schemas such as REMOTE_KIOTA_PROP or Leaked into generated clients. This issue is fixed in version 1.32.5 by AllowedExternalOriginsStreamLoader and the --allowed-external-origins option.

CVSS v3
7.1
EG Score
7.1(medium)
EG Risk
33(Track)
EG Risk 33/100SSVC: 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
Severity71% × 45%
Exploitation2% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
77.8%
KEV
Not listed

Published

July 16, 2026

Last Modified

July 16, 2026

Advisory Details (4)

Auto-updated Jul 16, 2026
Patch available. Sources: github_commit, github_pr, github_release, github.
github Patch Available

Generation-time SSRF + remote/local file inclusion via unrestricted $ref · Advisory · microsoft/kiota · GitHub

https://github.com/microsoft/kiota/security/advisories/GHSA-rg4h-fpcp-2qm8
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_pr

feat: adds an allow list parameter for external references resolution

Fix merged in microsoft/kiota PR #7888 on 2026-07-03 — awaiting tagged release

https://github.com/microsoft/kiota/pull/7888
github_commit

commit cccd798027f0 (microsoft/kiota)

Fix landed in microsoft/kiota commit cccd798027f0 — awaiting tagged release

https://github.com/microsoft/kiota/commit/cccd798027f0a20db796b3df6c64f9897a39d7b1

Weakness Classification(3)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 13× 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.

  1. 2026-07-23 14:18 UTCEPSS rescore
  2. 2026-07-23 14:18 UTCEPSS rescore
  3. 2026-07-23 03:21 UTCEG score recompute
  4. 2026-07-22 14:08 UTCEPSS rescore
  5. 2026-07-22 14:08 UTCEPSS rescore
  6. 2026-07-21 15:25 UTCEPSS rescore
  7. 2026-07-21 15:25 UTCEPSS rescore
  8. 2026-07-20 17:08 UTCEPSS rescore
  9. 2026-07-19 14:31 UTCEPSS rescore
  10. 2026-07-19 02:29 UTCEPSS rescore
  11. 2026-07-18 10:04 UTCEPSS rescore
  12. 2026-07-16 15:25 UTCEG score recompute
  13. 2026-07-16 15:23 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-59867?
CVE-2026-59867 is a high vulnerability published on July 16, 2026. Kiota is an OpenAPI based HTTP Client code generator. Prior to 1.32.5, Kiota resolved OpenAPI $ref values by fetching remote http(s) URLs and reading local absolute or out-of-tree file paths, allowing kiota generate on an attacker-controlled or attacker-influenced description to perform build-time…
When was CVE-2026-59867 disclosed?
CVE-2026-59867 was first published in the National Vulnerability Database on July 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-59867 actively exploited?
CVE-2026-59867 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 77.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-59867?
CVE-2026-59867 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2026-59867?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-59867, 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.

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