CVE-2022-42965Public exploitNetwork attack vector

Service interruption via exponential regex backtracking

Published Nov 9, 2022 · Updated May 1, 2025

Regular expression denial of service in Snowflake Connector for Python before 2.8.2 allows attackers to interrupt applications. The undocumented get_file_transfer_type method applies a PUT/GET-detection regular expression with exponential backtracking to arbitrary SQL text. An application must pass attacker-controlled input to this internal method, causing excessive CPU use and delayed or stalled processing without reported data disclosure or modification.

CVSS severity3.7
Low
EPSS probability0.86%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Regular expression denial of service in Snowflake Connector for Python before 2.8.2 allows attackers to interrupt applications. The undocumented get_file_transfer_type method applies a PUT/GET-detection regular expression with exponential backtracking to arbitrary SQL text. An application must pass attacker-controlled input to this internal method, causing excessive CPU use and delayed or stalled processing without reported data disclosure or modification.

The record

CVE
CVE-2022-42965
Published
Nov 9, 2022
Updated
May 1, 2025
Vendor
Snowflake
Product
Snowflake Connector for Python
Classifications
CWE-1333, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 9, 2022CVE publishedPublication date reported by the CVE source.
  2. May 1, 2025Record 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=unspecified <2.8.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Snowflake · Snowflake Connector for Pythonversion=unspecified <2.8.2

Published CVSS scores

7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.7JFrogCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-1333Inefficient Regular Expression Complexity
T1499.004Application or System Exploitation

Public exploit references

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

Technologies

Your stack

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Your stack

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