CVE-2026-56748

High

Description

Improper validation of symbolic links in the Pack Git import feature in Cribl Stream before 4.18.2 allows a remote authenticated attacker with Pack import and pipeline preview permissions to execute arbitrary code as the Cribl server process via a crafted Git repository containing a symbolic link in the pack's functions directory.

SeverityHigh

CVSS8.8

Exploit probability—

ProductCribl Stream

PublishedJul 27, 2026

First seenJul 27, 2026

Weakness typeCWE-61CWE-61

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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