CVE-2026-86600

HIGHPre-NVD 8.28.2—
EchelonGraph scoreHIGH confidence

Score 8.2 from GitHub Security Advisory (severity: HIGH) published 2026-09-08. a secondary CVSS source baseline 8.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.2EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.2Exploit: None knownExposed: 0

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

In affected Snowflake drivers, WORKLOAD_IDENTITY authentication requests a cloud workload-identity token and attaches it to the login request without verifying that the configured host is a Snowflake endpoint. An attacker who can modify the connection configuration can cause the driver to mint a fresh attestation and send it to a host they control. The captured token can be replayed to Snowflake for its remaining lifetime in accounts where that workload identity is already registered. On Azure, the token audience is also taken from connection configuration. Combined with an attacker-controlled host, the driver can request a Managed Identity access token scoped to a non-Snowflake Azure resource and deliver it to the attacker. That path is the only case in which impact extends beyond Snowflake; it is bounded by the token lifetime and the managed identity’s permissions. Successful exploitation requires WORKLOAD_IDENTITY authentication on a workload that already has an ambient cloud identity. Patched driver versions restrict this authenticator to recognized Snowflake hosts. Users must manually upgrade.

CVSS v3
8.2
EG Score
8.2(high)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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
Severity82% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
24%
KEV
Not listed

Published

September 8, 2026

Last Modified

September 10, 2026

Advisory Details (8)

Auto-updated Sep 8, 2026
Patch available. Sources: github_release.
github_release Patch Available

Internal Release

Patch available: snowflakedb/libsnowflakeclient v2.10.0

https://github.com/snowflakedb/libsnowflakeclient/releases/tag/v2.10.0
generic

PHP PDO Driver for Snowflake release notes for 2026 | Snowflake Documentation

https://docs.snowflake.com/en/release-notes/clients-drivers/php-pdo-2026#version-420-sep-3-2026
generic

ODBC Driver release notes for 2026 | Snowflake Documentation

https://docs.snowflake.com/en/release-notes/clients-drivers/odbc-2026#version-3200-sep-3-2026
generic

.NET Driver release notes for 2026 | Snowflake Documentation

https://docs.snowflake.com/en/release-notes/clients-drivers/dotnet-2026#version-610-september-3-2026
generic

Node.js Driver release notes for 2026 | Snowflake Documentation

https://docs.snowflake.com/en/release-notes/clients-drivers/nodejs-2026#version-330-september-3-2026
generic

JDBC Driver release notes for 2026 | Snowflake Documentation

https://docs.snowflake.com/en/release-notes/clients-drivers/jdbc-2026#version-434-sep-03-2026
generic

Go Snowflake Driver release notes for 2026 | Snowflake Documentation

https://docs.snowflake.com/en/release-notes/clients-drivers/golang-2026#version-220-sep-03-2026
github_release Patch Available

4.7.3

Patch available: snowflakedb/snowflake-connector-python v4.7.3

https://github.com/snowflakedb/snowflake-connector-python/releases/tag/v4.7.3

Vendor Advisories for CVE-2026-86600(1)

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

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 26× in last 7d / 45× 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. 2026-09-18 23:23 UTCEG score recompute
  2. 2026-09-18 23:23 UTCGHSA enrichment
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-18 10:59 UTCGHSA enrichment
  5. 2026-09-17 22:35 UTCEG score recompute
  6. 2026-09-17 22:35 UTCGHSA enrichment
  7. 2026-09-17 19:32 UTCEPSS rescore
  8. 2026-09-17 10:05 UTCGHSA enrichment
  9. 2026-09-16 21:41 UTCEG score recompute
  10. 2026-09-16 21:41 UTCGHSA enrichment
  11. 2026-09-16 14:09 UTCEPSS rescore
  12. 2026-09-16 09:16 UTCEG score recompute
  13. 2026-09-16 09:16 UTCGHSA enrichment
  14. 2026-09-16 05:15 UTCEPSS rescore
  15. 2026-09-15 20:51 UTCGHSA enrichment
  16. 2026-09-15 08:13 UTCEG score recompute
  17. 2026-09-15 08:13 UTCGHSA enrichment
  18. 2026-09-15 03:12 UTCEPSS rescore
  19. 2026-09-15 03:12 UTCEPSS rescore
  20. 2026-09-14 19:48 UTCGHSA enrichment
  21. 2026-09-14 07:24 UTCGHSA enrichment
  22. 2026-09-13 19:00 UTCEG score recompute
  23. 2026-09-13 19:00 UTCGHSA enrichment
  24. 2026-09-13 06:36 UTCGHSA enrichment
  25. 2026-09-12 18:12 UTCEG score recompute
Show 20 more
  1. 2026-09-12 18:12 UTCGHSA enrichment
  2. 2026-09-12 05:48 UTCGHSA enrichment
  3. 2026-09-11 17:24 UTCEG score recompute
  4. 2026-09-11 17:24 UTCGHSA enrichment
  5. 2026-09-11 14:53 UTCEPSS rescore
  6. 2026-09-11 14:53 UTCEPSS rescore
  7. 2026-09-11 04:48 UTCGHSA enrichment
  8. 2026-09-10 16:24 UTCEG score recompute
  9. 2026-09-10 16:24 UTCGHSA enrichment
  10. 2026-09-10 15:30 UTCEG score recompute
  11. 2026-09-10 15:30 UTCGHSA enrichment
  12. 2026-09-10 11:32 UTCEG score recompute
  13. 2026-09-10 11:32 UTCGHSA enrichment
  14. 2026-09-09 23:06 UTCGHSA enrichment
  15. 2026-09-09 08:13 UTCGHSA enrichment
  16. 2026-09-08 19:49 UTCEG score recompute
  17. 2026-09-08 19:49 UTCGHSA enrichment
  18. 2026-09-08 16:40 UTCEG score recompute
  19. 2026-09-08 15:51 UTCEG score recompute
  20. 2026-09-08 15:49 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-86600?
CVE-2026-86600 is a high vulnerability published on September 8, 2026. In affected Snowflake drivers, WORKLOADIDENTITY authentication requests a cloud workload-identity token and attaches it to the login request without verifying that the configured host is a Snowflake endpoint. An attacker who can modify the connection configuration can cause the driver to mint a…
When was CVE-2026-86600 disclosed?
CVE-2026-86600 was first published in the National Vulnerability Database on September 8, 2026, with the most recent update on September 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-86600 actively exploited?
CVE-2026-86600 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 76.1% of all scored CVEs.
What is the CVSS score of CVE-2026-86600?
CVE-2026-86600 has a CVSS v3 base score of 8.2 (NVD).
How do I remediate CVE-2026-86600?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-86600, 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

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