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CVE-2026-56748

Cribl Stream remote code execution

8.8 HIGHEPSS 0.92%
  1. Published27 Jul 2026

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

Cribl Stream< 4.18.2

Remediation

Fixed in
Cribl Stream≥ 4.18.2
Patch & vendor advisories

References

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Frequently asked

Is CVE-2026-56748 being actively exploited?

CVE-2026-56748 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.92%.

How severe is CVE-2026-56748?

CVE-2026-56748 has a CVSS 3.1 base score of 8.8, rated high. EPSS estimates a 0.92% probability of exploitation.

Which products are affected by CVE-2026-56748?

Affected products include Cribl Stream.

How do I fix CVE-2026-56748?

Upgrade affected software to a fixed version, for example Cribl Stream 4.18.2 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-56748 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.