CVE record · 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

CVSS 7.5 HighEPSS 0.0036 · 30th percentile

Published by the CVE Program (CNA: CPANSec) at 3 Jun 2026, 00:15 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
RURBAN	Cpanel::JSON::XS Package name: Cpanel-JSON-XS https://cpan.org/modules	affected before 4.41 custom Other versions: unaffected

Identifiers: CVE-2026-9516
CNA: CPANSec
Weakness (CWE): CWE-755 · CWE-763
Tags: RURBAN Cpanel::JSON::XS
Memory corruption
CWE-755
Published: 3 Jun 2026
Updated: 3 Jun 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
7.5	High	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	ADP (CISA-ADP)

CISA KEV Not listed.
EPSS 0.0036, the 30th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 3 Jun 2026. New records show when each source confirmed them.

Sources

References from the CNA

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.