Multiple Security Vulnerabilities in Snowflake libsnowflakeclient

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-16870
StatePUBLISHED
AssignerSNOWFLAKE
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-24 06:16:42 UTC
Updated2026-07-24 18:16:52 UTC
DescriptionMultiple security vulnerabilities in Snowflake libsnowflakeclient versions prior to 2.9.2 could allow remote code execution and credential exfiltration. A stack-based buffer overflow in the file download path could allow remote code execution on a victim host. An attacker could exploit this by uploading a file with a crafted encryption metadata field to a shared internal stage that a victim process later downloads, and impact would be limited to deployments where principals with different privilege levels share the same internal stage. A related out-of-bounds write in the same download path could allow memory corruption with attacker-controlled write primitives. An attacker may exploit this through a crafted initialization vector metadata field on a shared stage, and impact would be limited by the same stage-write precondition. Improper validation of connection parameters could allow an attacker-controlled input to redirect outbound authentication requests — including credentials and tokens — to an attacker-controlled endpoint. Impact is limited to embedding deployments where a lower-privileged principal can influence connection configuration while higher-privileged service credentials are in use. The fix is available in Snowflake libsnowflakeclient version 2.9.2. The Snowflake PHP PDO Driver and Snowflake ODBC Driver embed the affected library; fixes are available in versions 4.1.0 and 3.19.0 respectively. Users must manually upgrade.

Risk And Classification

Primary CVSS: v3.1 8.8 HIGH from 412d305a-227d-44f9-a262-a31ba44f2aea

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.003620000 probability, percentile 0.287560000 (date 2026-07-24)

Problem Types: CWE-121 | CWE-787 | CWE-918 | CWE-121 Stack-based Buffer Overflow | CWE-787 Out-of-bounds Write | CWE-918 Server-Side Request Forgery (SSRF)

VersionSourceTypeScoreSeverityVector
3.1412d305a-227d-44f9-a262-a31ba44f2aeaSecondary8.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNACVSS8.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Snowflake Snowflake Libsnowflakeclient affected 2.9.2 semver Not specified
CNA Snowflake Snowflake PHP PDO Driver affected 4.1.0 semver Not specified
CNA Snowflake Snowflake ODBC Driver affected 2.16.3 3.19.0 semver Not specified

References

ReferenceSourceLinkTags
github.com/snowflakedb/libsnowflakeclient/releases/tag/v2.9.2 412d305a-227d-44f9-a262-a31ba44f2aea github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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