CVE-2026-56747
Received Received - Intake

Improper Code Generation in Cribl Stream

Vulnerability report for CVE-2026-56747, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-07-27

Last updated on: 2026-07-27

Assigner: af879a92-7297-456a-bb0e-905ac6c64bdc

Description

Improper control of generation of code in the JSON Pointer-to-accessor compiler in Cribl Stream before 4.18.2 allows a remote authenticated attacker with edit privileges to execute arbitrary JavaScript on the server via a crafted database connection identifier or pack configuration value.

CVSS Scores

EPSS Scores

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Meta Information

Published
2026-07-27
Last Modified
2026-07-27
Generated
2026-07-28
AI Q&A
2026-07-27
EPSS Evaluated
N/A
NVD
EUVD

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
cribl stream 4.18.2
cribl stream to 4.18.2 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-94 The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

Attack-Flow Graph

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Executive Summary

This vulnerability involves improper control of code generation in the JSON Pointer-to-accessor compiler in Cribl Stream before version 4.18.2. A remote authenticated attacker with edit privileges can exploit this by crafting a database connection identifier or pack configuration value to execute arbitrary JavaScript on the server.

Impact Analysis

An attacker could gain control over the server by executing malicious JavaScript, potentially leading to unauthorized access, data theft, or disruption of services. This requires the attacker to have edit privileges in the system.

Mitigation Strategies

Upgrade Cribl Stream to version 4.18.2 or later to address the vulnerability. Check your current version and apply the update immediately.

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EPSS Chart