CVE-2026-15925
Improper TLS Hostname Verification in Snowflake Connector for Python
Description
Improper TLS hostname verification in Snowflake Connector for Python versions prior to 4.7.1 may have allowed a network-positioned attacker to bypass certificate hostname validation on HTTPS connections made by the connector. An attacker with on-path network access could exploit this by intercepting or redirecting network traffic and presenting a certificate signed by any trusted CA for any domain, causing the connector to accept connections without validating that the certificate matched the requested hostname. Successful exploitation requires an on-path traffic interception capability (e.g. ARP/DNS poisoning, rogue access point, BGP hijacking, or malicious proxy/exit node). This vulnerability may have exposed credentials, query data, and staged file contents to interception and tampering, and may have enabled the attacker to issue arbitrary SQL within the context of the victim's connector session. Impact is limited by the privileges of the affected Snowflake role. The fix is available in Snowflake Connector for Python version 4.7.1. Users must manually upgrade.
INFO
Published Date :
July 16, 2026, 7:16 a.m.
Last Modified :
July 16, 2026, 7:16 a.m.
Remotely Exploit :
Yes !
Source :
412d305a-227d-44f9-a262-a31ba44f2aea
Affected Products
The following products are affected by CVE-2026-15925
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 4.0 | CRITICAL | 412d305a-227d-44f9-a262-a31ba44f2aea | ||||
| CVSS 4.0 | CRITICAL | 412d305a-227d-44f9-a262-a31ba44f2aea |
Solution
- Upgrade Snowflake Connector for Python to 4.7.1.
- Verify TLS hostname validation is correctly configured.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-15925.
| URL | Resource |
|---|---|
| https://github.com/snowflakedb/snowflake-connector-python/releases/tag/v4.7.1 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-15925 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-15925
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-15925 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-15925 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by 412d305a-227d-44f9-a262-a31ba44f2aea
Jul. 16, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Snowflake', 'product': 'Snowflake Connector for Python', 'versions': [{'status': 'affected', 'version': '1.7.4', 'lessThan': '4.7.1', 'versionType': 'semver'}], 'defaultStatus': 'unaffected'}] Added Description Improper TLS hostname verification in Snowflake Connector for Python versions prior to 4.7.1 may have allowed a network-positioned attacker to bypass certificate hostname validation on HTTPS connections made by the connector. An attacker with on-path network access could exploit this by intercepting or redirecting network traffic and presenting a certificate signed by any trusted CA for any domain, causing the connector to accept connections without validating that the certificate matched the requested hostname. Successful exploitation requires an on-path traffic interception capability (e.g. ARP/DNS poisoning, rogue access point, BGP hijacking, or malicious proxy/exit node). This vulnerability may have exposed credentials, query data, and staged file contents to interception and tampering, and may have enabled the attacker to issue arbitrary SQL within the context of the victim's connector session. Impact is limited by the privileges of the affected Snowflake role. The fix is available in Snowflake Connector for Python version 4.7.1. Users must manually upgrade. Added CVSS V4.0 AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-297 Added Reference https://github.com/snowflakedb/snowflake-connector-python/releases/tag/v4.7.1