CVE-2026-19594 Snowflake CVE debrief

Who should care

Defenders of applications built on snowflake.core should assess exposure and upgrade to version 1.13.0. This includes operators, platform administrators, vulnerability management teams, and security teams who need to verify and mitigate potential risks associated with this vulnerability. Particular attention should be given to applications using EXECUTE AS OWNER stored procedures, Streamlit apps, or Native Apps.

Why it matters

CVE-2026-19594 is a high-severity vulnerability in Snowflake Python API versions prior to 1.13.0, allowing for confused-deputy privilege escalation. Defenders of applications built on snowflake.core should assess exposure and upgrade to version 1.13.0 to prevent potential exploitation.

• Potential privilege escalation through path traversal and HTTP parameter pollution
• Possible exploitation by attackers with access to downstream applications built on snowflake.core
• Need to verify and upgrade to Snowflake Python API version 1.13.0
• Potential impact on applications using EXECUTE AS OWNER stored procedures, Streamlit apps, or Native Apps

Technical summary

Insufficient input sanitization in Snowflake Python API versions prior to 1.13.0 allows for confused-deputy privilege escalation through path traversal and HTTP parameter pollution. This vulnerability could be exploited by an attacker with access to a downstream application built on snowflake.core, potentially leading to privilege escalation under the application's privileged session. Successful exploitation requires the attacker to control an identifier or object-name string in an application built on snowflake.core that passes it to `snowflake.core` under a higher-privileged Snowflake session.

Defensive priority

Upgrade to Snowflake Python API version 1.13.0

Recommended defensive actions

• Upgrade to Snowflake Python API version 1.13.0
• Review and update applications built on snowflake.core to ensure secure usage
• Monitor for potential exploitation attempts
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented

Evidence notes

The CVE record and NVD entry provide details on the vulnerability in Snowflake Python API versions prior to 1.13.0. Evidence is limited to public CVE and NVD records. Defenders should verify affected product deployments, review official advisories, and plan for vendor-supported updates or mitigations. Additional details can be found in the official CVE Program record and NIST NVD detail page.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.