What is CVE-2026-9334?

CVE-2026-9334 is a high-severity vulnerability in Rurban Cpanel\, classified under Access of Resource Using Incompatible Type (Type Confusion). CVSS score: 7.3/10. Published 2026-06-03.

How severe is CVE-2026-9334?

High severity. CVSS v3 base score is 7.3 out of 10.

Vulnerability in Rurban Cpanel\

CVE-2026-9334

Cpanel::JSON::XS versions before 4.41 for Perl allow type confusion via duplicate object keys when dupkeys_as_arrayref is enabled. decode_hv() collapses duplicate object keys into an array reference under dupkeys_as_arrayref. The branch r…

EPSS: 0.000 (11.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.

Affected products

Rurban Cpanel\ — versions \
Rurban Cpanel::json::xs — versions 0

Weakness classification (CWE)

CWE-843 — Access of Resource Using Incompatible Type (Type Confusion)

References

9b29abf9-4ab0-4765-b253-1875cd9b441e (Patch, patch)
9b29abf9-4ab0-4765-b253-1875cd9b441e (release-notes, Release Notes)
af854a3a-2127-422b-91ae-364da2661108 (Patch, Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2026-9334?: CVE-2026-9334 is a high-severity vulnerability in Rurban Cpanel\, classified under Access of Resource Using Incompatible Type (Type Confusion). CVSS score: 7.3/10. Published 2026-06-03.
How severe is CVE-2026-9334?: High severity. CVSS v3 base score is 7.3 out of 10.