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vuln-cve/data/2026/9xxx/CVE-2026-9516.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-9516",
"assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
"state": "PUBLISHED",
"assignerShortName": "CPANSec",
"dateReserved": "2026-05-25T18:54:26.396Z",
"datePublished": "2026-06-03T00:15:51.685Z",
"dateUpdated": "2026-06-03T15:58:49.426Z"
},
"containers": {
"cna": {
"affected": [
{
"collectionURL": "https://cpan.org/modules",
"defaultStatus": "unaffected",
"packageName": "Cpanel-JSON-XS",
"product": "Cpanel::JSON::XS",
"programFiles": [
"XS.xs"
],
"programRoutines": [
{
"name": "decode_json"
}
],
"repo": "https://github.com/rurban/Cpanel-JSON-XS",
"vendor": "RURBAN",
"versions": [
{
"lessThan": "4.41",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "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.\n\nTo skip a leading 3-byte UTF-8 BOM, decode_json() advances the input scalar's string pointer past the mark with SvPV_set() and restores it only on the normal return path. When decoding aborts through a Perl exception, for example a filter_json_object callback that croaks, the restore is skipped and the scalar is left with its string pointer offset into its own buffer and a shortened length.\n\nWhen that scalar is later freed, the allocator receives an invalid pointer and the interpreter aborts. A single BOM prefixed document decoded with a throwing filter callback crashes any caller."
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-763",
"description": "CWE-763 Release of Invalid Pointer or Reference",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-755",
"description": "CWE-755 Improper Handling of Exceptional Conditions",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
"shortName": "CPANSec",
"dateUpdated": "2026-06-03T00:15:51.685Z"
},
"references": [
{
"tags": [
"patch"
],
"url": "https://github.com/rurban/Cpanel-JSON-XS/commit/dfe1b41a36caba51dc12a2917fe50285d1ffaa7b.patch"
},
{
"tags": [
"release-notes"
],
"url": "https://metacpan.org/release/RURBAN/Cpanel-JSON-XS-4.41/changes"
}
],
"solutions": [
{
"lang": "en",
"value": "Upgrade to Cpanel::JSON::XS 4.41 or later."
}
],
"source": {
"discovery": "UNKNOWN"
},
"timeline": [
{
"lang": "en",
"time": "2026-05-18T00:00:00.000Z",
"value": "Issue reported."
},
{
"lang": "en",
"time": "2026-05-27T00:00:00.000Z",
"value": "Version 4.41 released with fix."
},
{
"lang": "en",
"time": "2026-05-28T00:00:00.000Z",
"value": "Fix verified."
}
],
"title": "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",
"x_generator": {
"engine": "cpansec-cna-tool 0.1"
}
},
"adp": [
{
"title": "CVE Program Container",
"references": [
{
"url": "http://www.openwall.com/lists/oss-security/2026/06/03/5"
}
],
"providerMetadata": {
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE",
"dateUpdated": "2026-06-03T09:35:39.521Z"
}
},
{
"metrics": [
{
"cvssV3_1": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 7.5,
"attackVector": "NETWORK",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "NONE",
"confidentialityImpact": "NONE"
}
},
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-06-03T15:58:42.977647Z",
"id": "CVE-2026-9516",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-06-03T15:58:49.426Z"
}
}
]
}
}