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Vulnerability record · CVE-2026-56747 · published 27 July 2026

CVE-2026-56747: Cribl stream code injection vulnerability

Cribl · Cribl Stream

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.

8.7 CVSS 4.0 High EPSS 0.67% · top 50.0% CWE-94 · Code injection
8.7CVSS 4.0 base score
0.67%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
20 Aug 2026Last modified by NVD

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:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://docs.cribl.io/stream/release-notes/release-v4182/#security-fixes Release Notes
https://trust.cribl.io/notifications Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-56747), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.