CVE-2026-81930Network attack vectorHinoki check available

Token theft via unvalidated connection account URL

Published Sep 29, 2026 · Updated Sep 29, 2026

Token theft in Apache Airflow Snowflake provider before 6.18.0 allows remote authenticated users to redirect Snowflake API tokens to an attacker host. The Snowflake hooks interpolate unchecked connection account and region values into request URLs, allowing URL punctuation to change the destination host while authentication headers are sent. Exploitation requires permission to edit a Snowflake connection and an existing workflow that subsequently uses it; the exposed token can be replayed against Snowflake.

CVSS severityUnavailable
Unscored
EPSS probability0.43%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Token theft in Apache Airflow Snowflake provider before 6.18.0 allows remote authenticated users to redirect Snowflake API tokens to an attacker host. The Snowflake hooks interpolate unchecked connection account and region values into request URLs, allowing URL punctuation to change the destination host while authentication headers are sent. Exploitation requires permission to edit a Snowflake connection and an existing workflow that subsequently uses it; the exposed token can be replayed against Snowflake.

The record

CVE
CVE-2026-81930
Published
Sep 29, 2026
Updated
Sep 29, 2026
Vendor
Apache Software Foundation
Product
Apache Airflow Snowflake provider
Classifications
T1528
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 29, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 29, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <6.18.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Apache Software Foundation · Apache Airflow Snowflake providerversion=0 <6.18.0

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1528Steal Application Access Token

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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