CVE-2026-56747

High

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.

SeverityHigh

CVSS8.8

Exploit probability—

ProductCribl Stream

PublishedJul 27, 2026

First seenJul 27, 2026

Weakness typeCWE-94Code injection

How to fix

Update

cribl cribl_stream4.18.2 or later

Vendor advisories

docs.cribl.io/stream/release-notes/release-v4182/#security-fixes
trust.cribl.io/notifications

Affected products

Product	Affected versions	Fixed in
cribl cribl_stream	v < 4.18.2	4.18.2

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