What is CVE-2026-56747?

CVE-2026-56747 is a high-severity vulnerability in Cribl Stream, classified under Code Injection. CVSS score: 8.8/10. Published 2026-07-27.

How severe is CVE-2026-56747?

High severity. CVSS v3 base score is 8.8 out of 10.

RCE in Cribl Stream

CVE-2026-56747

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…

Vulnerability class: RCE (Remote Code Execution)

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Cribl Stream — versions 0

Weakness classification (CWE)

CWE-94 — Code Injection

References

af879a92-7297-456a-bb0e-905ac6c64bdc (release-notes)
af879a92-7297-456a-bb0e-905ac6c64bdc (vendor-advisory)

Frequently asked questions

What is CVE-2026-56747?: CVE-2026-56747 is a high-severity vulnerability in Cribl Stream, classified under Code Injection. CVSS score: 8.8/10. Published 2026-07-27.
How severe is CVE-2026-56747?: High severity. CVSS v3 base score is 8.8 out of 10.