CVE-2026-19594Network attack vector

Confused-deputy privilege escalation via unencoded identifiers

Published Aug 12, 2026 · Updated Aug 12, 2026

Path traversal and HTTP parameter pollution in Snowflake Python APIs before 1.13.0 allow remote authenticated users to escalate privileges. Unencoded .. path segments redirect REST requests to parent resources, while unencoded &, #, and = delimiters let object names override swap, clone, or rename constraints. Exploitation requires a downstream application to pass attacker-controlled identifiers through snowflake.core under a higher-privileged Snowflake session.

CVSS severity8.1
High
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Path traversal and HTTP parameter pollution in Snowflake Python APIs before 1.13.0 allow remote authenticated users to escalate privileges. Unencoded .. path segments redirect REST requests to parent resources, while unencoded &, #, and = delimiters let object names override swap, clone, or rename constraints. Exploitation requires a downstream application to pass attacker-controlled identifiers through snowflake.core under a higher-privileged Snowflake session.

The record

CVE
CVE-2026-19594
Published
Aug 12, 2026
Updated
Aug 12, 2026
Vendor
Snowflake
Product
Snowflake Python APIs
Classifications
CWE-141, CWE-22, T1068
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 12, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 12, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=0 <1.13.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Snowflake · Snowflake Python APIsversion=0 <1.13.0

Published CVSS scores

8.1National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

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.

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

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-141Improper Neutralization of Parameter/Argument Delimiters
CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1068Exploitation for Privilege Escalation

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo