What is CVE-2026-9516?

CVE-2026-9516 is a high-severity vulnerability in Rurban Cpanel\, classified under Improper Handling of Exceptional Conditions. CVSS score: 7.5/10. Published 2026-06-03.

How severe is CVE-2026-9516?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Rurban Cpanel\

CVE-2026-9516

Cpanel::JSON::XS versions before 4.41 for Perl allow denial of service via UTF-8 BOM prefixed input when a decode filter callback throws. To skip a leading 3-byte UTF-8 BOM, decode_json() advances the input scalar's string pointer past th…

EPSS: 0.000 (11.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

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

Weakness classification (CWE)

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-2026-9516?: CVE-2026-9516 is a high-severity vulnerability in Rurban Cpanel\, classified under Improper Handling of Exceptional Conditions. CVSS score: 7.5/10. Published 2026-06-03.
How severe is CVE-2026-9516?: High severity. CVSS v3 base score is 7.5 out of 10.