What is CVE-2026-45392?

CVE-2026-45392 is a high-severity vulnerability in Cribl Stream, classified under Cross-site Scripting. CVSS score: 8.7/10. Published 2026-05-12.

How severe is CVE-2026-45392?

High severity. CVSS v3 base score is 8.7 out of 10.

XSS in Cribl Stream

CVE-2026-45392

DOM-based cross-site scripting (XSS) in Cribl Stream before 4.17.1 allows a remote attacker to execute arbitrary JavaScript in the browser of an authenticated user who is tricked into visiting a crafted URL and interacting with the page.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.000 (13.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N.

Affected products

Cribl Stream — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting
CWE-20 — Improper Input Validation

References

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

Frequently asked questions

What is CVE-2026-45392?: CVE-2026-45392 is a high-severity vulnerability in Cribl Stream, classified under Cross-site Scripting. CVSS score: 8.7/10. Published 2026-05-12.
How severe is CVE-2026-45392?: High severity. CVSS v3 base score is 8.7 out of 10.