CVE-2026-8178Network attack vector

Code execution via unsafe connection URL class loading

Published May 8, 2026 · Updated May 8, 2026

Unsafe class loading in Amazon Redshift JDBC Driver before 2.2.2 allows attackers to execute code through JDBC connection URL parameters. The driver uses parameter values to select and instantiate arbitrary classes from the application's classpath without restricting them to expected implementations. Exploitation requires control over the connection URL and a suitable class on the classpath, and code runs with the application's JVM privileges.

CVSS severity9.2
Critical
EPSS probability0.57%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unsafe class loading in Amazon Redshift JDBC Driver before 2.2.2 allows attackers to execute code through JDBC connection URL parameters. The driver uses parameter values to select and instantiate arbitrary classes from the application's classpath without restricting them to expected implementations. Exploitation requires control over the connection URL and a suitable class on the classpath, and code runs with the application's JVM privileges.

The record

CVE
CVE-2026-8178
Published
May 8, 2026
Updated
May 8, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-470, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 8, 2026CVE publishedPublication date reported by the CVE source.
  2. May 8, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.1AMZNCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
9.2AMZNCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-470Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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