What is CVE-2026-56748?

CVE-2026-56748 is a high-severity vulnerability in Cribl Stream, classified under UNIX Symbolic Link (Symlink) Following. CVSS score: 8.8/10. Published 2026-07-27.

How severe is CVE-2026-56748?

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

Vulnerability in Cribl Stream

CVE-2026-56748

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 proce…

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-61 — UNIX Symbolic Link (Symlink) Following

References

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

Frequently asked questions

What is CVE-2026-56748?: CVE-2026-56748 is a high-severity vulnerability in Cribl Stream, classified under UNIX Symbolic Link (Symlink) Following. CVSS score: 8.8/10. Published 2026-07-27.
How severe is CVE-2026-56748?: High severity. CVSS v3 base score is 8.8 out of 10.